Smartphone Features Functions Applications Issues and Market

Features Functions Applications Issues and Market of Smartphone usable in Tele-health

Meaning of Smart Phone: A smart phone refers to an independent operating system and an independent running space like a personal computer. Users can install programs provided by third-party service providers such as software, games, and navigation by themselves, and can implement wireless networks through mobile communication networks. Generic term for the type of mobile phone connected. These are now well usable for telehealth purposes.

At present, the development trend of smart phones is to fully add a number of patented technologies such as artificial intelligence and 5G, making smart phones the most widely used patented products.

Smart phones for telehealth purposes usage has 3 characteristics:

Excellent operating system
Fee installation of various software (Android only)
Full-screen full-touch operation

Which are the top 5 most well-known smart phone brands in the world?

Top 5 well known smart phone brands are:

Apple (Apple)
Huawei (HUAWEI)
Samsung
Nokia
HTC

Which are the top Chinese Smart Phone Brands?

Top Chinese Smart Phone brands are:

Xiaomi (Mi)
OPPO
Meizu (MEIZU)
Lenovo
ZTE (ZTE)
Coolpad
OnePlus
Gionee (GIONEE)
Vivo
Tianyu (Tianyu, K-Touch) and other Chinese brands have attracted much attention in Asia and Europe.

Gadget name: Smart Phone

Operating system: Android, iOS, WP, Symbian, etc.

Main features: Operating system, self-installed software, full touch screen

Famous brand: Google, Apple, Nokia, BlackBerry, etc.

Chinese Famous Brand: Huawei, ZTE, Lenovo, Xiaomi, Meizu, OPPO, VIVO, etc.

Main advantage: Powerful performance, strong operability, excellent entertainment

Main disadvantage: Short battery life and slightly larger fuselage

Table of Content

1. History

2. Main Features

3. Operating System

▪ Google Android

▪ Apple iOS

▪ Microsoft Windows Phone

▪ Blackberry

▪ Symbian

▪ Samsung bada

▪ MeeGo

▪ Other systems

4. Hardware system

▪ CPU

▪ Sensor

▪ Ground transmitter

▪ Electronic compass

▪ Processor

5. Main Functions

▪ Smart phone function

▪ Multi-task function

▪ Other main functions

▪ HDR mode

6. Specifications

7. Status analysis

▪ Mobile payment

▪ Security situation

▪ Patent dispute

8. Market analysis

▪ Data

▪ Price

▪ Brand

▪ Prospect

9. Application areas

▪ Social network

▪ Military field

▪ Fire control system

▪ Wireless remote control

10. Market share

▪ According to the operating system

▪ According to the hardware manufacturer

11. Main Issues

▪ Virus problem

▪ Power consumption problem

▪ Flashing problem

▪ Crash problem

▪ Low temperature problem

12. Human influence

Smartphones Development path

The world's first recognized smartphone IBM Simon (Simon Personal Communication Device) was born in 1993, and it was manufactured in cooperation with IBM and BellSouth.

As an emerging technology CDMA CDMA2000 is rapidly taking the world by storm and has occupied 20% of the wireless market.

As of 2012, CDMA2000 users worldwide have exceeded 256 million, and 156 operators in 70 countries have commercialized 3G CDMA services.

Dozens of OEMs around the world, including Qualcomm’s authorized LICENSE, have launched EVDO mobile smart terminals.

In 2002, Qualcomm’s chip sales achieved a record high performance. Many manufacturers in the company have provided more than 7.5 billion chips. The smartphone was born under this background.

The application software between mobile phones of different operating systems is not compatible with each other, and the mobile phone software of the same system is basically universal, which is quite convenient to use.

Because third-party software can be installed, smart phones have rich extension functions.

The birth of the smartphone is the evolution of PocketPC. Modern HIPAA compliant tele-health usage smart phones are also like pocket PC.

The earliest handheld computers did not have a mobile phone call function, but as users' dependence on the personal information processing functions of handheld computers increased.

Also, they were not used to carrying both mobile phones and PPC devices at any time, so manufacturers will use handheld computer systems.

It was transplanted to mobile phones, so the concept of smart phones appeared.

Smart phones have more comprehensive processing capabilities than traditional phones, such as the S60 series of Symbian operating systems, S60 and Symbian 3 of Symbian, and some smartphones of MeeGo operating systems.

However, in terms of recent developments, these types of smartphones tend to merge.

Smart phones are similar in appearance and operation to traditional phones, including not only touch screens but also non-touch screen numeric keypad phones and full-size keyboard operated phones.

However, traditional mobile phones use a closed operating system developed by manufacturers themselves, and the functions they can achieve are very limited, and they do not have the scalability of smart phones.

The term smartphone is mainly for feature phones, and it does not mean how smart this phone is; from another perspective, the so-called "smart phone" is a device that can be installed at will And mobile phones that uninstall application software (just like computers). Feature phones are not free to install and uninstall.

Smartphone software

IBM Simon

In addition, the emergence of JAVA enabled the later feature phones to have the function of installing JAVA applications, but the operation friendliness, operating efficiency, and operation of system resources of JAVA programs are much worse than those of smart phones.

The world's first smartphone is Simon, which was launched by IBM in 1993.

This is also the world's first smartphone using a touch screen.

It uses the Zaurus operating system, and there is only one third-party application called "DispatchIt".

It has laid the foundation for future smartphone processors and has a milestone significance.

The first generation iPhone was released in 2007, and on July 11, 2008, Apple introduced the iPhone 3G.

Since then, the development of smart phones has opened a new era, and the iPhone has become a benchmark product that leads the industry.

Large-screen tablet phones (Phablet) have gradually become mainstream, and shipments in 2014 even surpassed small tablet computers.

According to the "2013-2017 China Smartphone Industry Market Demand Forecast and Investment Strategic Planning Analysis Report" estimates, in the first three quarters of 2012, the total number of global smartphone users has exceeded the 1 billion mark.

The number of users in the first three quarters of 2011 was only about 700 million. It can be seen that the potential of the smartphone market is incalculable.

More diverse features

From the perspective of specific market rankings, the first Samsung shipped 56.3 million units, with a market share of 31.3%.

Apple ranked second, with 26.9 million units shipped, and a market share of 15%; RIM occupies the top spot, out of the shipment volume was 7.7 million units, while ZTE shipped 7.5 million units, with a market share of 4.2%. From the perspective of brand competitiveness, Chinese smartphones still remain in low-price competition.

Under the mode of scale expansion, cost reduction and price reduction, Chinese smartphone manufacturers have relatively narrow profit margins.

In the third quarter of 2012, Apple and Samsung divided 106% of the profits in the smartphone market.

According to the prediction of China Electronic Information Industry Development Research Institute, 2013 to 2015 is the peak period of China's smartphone replacement. Cumulative sales in three years will reach 2 trillion yuan, and the sales volume of the smartphone market in mainland China will continue to maintain rapid growth.

At the same time, the innovation capabilities of China's domestic smartphone companies need to be improved, and product profitability still has a large gap with well-known international companies. China's telehealth system is also world class taking lead in Asia.

The development prospect of the domestic smartphone industry is bright, but there is still a long way to go.

Features of smartphones:

IPhone 4s

⒈With the ability to wirelessly access the Internet: that is, CDMA1X or 3G (WCDMA, CDMA-2000, TD-CDMA) networks that need to support GPRS or CDMA networks under GSM networks, or even 4G (HSPA +, FDD-LTE, TDD-LTE).

⒉With the function of PDA: including PIM (Personal Information Management), schedule memo, task arrangement, multimedia application, browsing the web.

⒊ Open operating system: It has an independent core processor (CPU) and memory, and can install more applications, so that the functions of the smartphone can be infinitely expanded.

⒋Humanization: The machine functions can be expanded according to individual needs.

According to personal needs, real-time expansion of the built-in functions of the machine, as well as software upgrades, intelligent recognition of software compatibility, and the realization of the humanized function of the software market synchronization.

⒌Powerful functions: strong expansion performance, and more third-party software support.

6. Fast running speed: With the development of the semiconductor industry, the core processor (CPU) has developed rapidly, making smart phones run faster and faster.

Operating system

Google Android

The name "Android" or "Anzhi" is widely known in Asia.

In fact, there is no unified Asian name.

It is jointly developed by Google and the Open Handheld Device Alliance. It is an intelligent operating system exclusively launched by Google.

The data in early 2011 shows that The operating system Android, which has only been officially launched for two years, has surpassed the Saipan operating system that has dominated for ten years and has become the world's first.

According to data from November 2012, Android occupies 76% of the global smartphone operating system market, and China has a 90% market share.

It has completely occupied the Chinese smartphone market and has become the most popular smartphone operating system in the world because of Google.

When launching Android, it was launched in the form of open source (open source), which led to a large number of mobile phone manufacturers in the world using the Android system to produce smart phones.

In addition, Android is also excellent in performance and other aspects, making Android the world's first in one fell swoop. A smart operating system.

Supporting manufacturers: All mobile phone manufacturers in the world can use it arbitrarily, and more than 80% of mobile phone manufacturers in the world use Android.

Third-party smart operating system based on Android smart operating system: Because Google has opened the source code of Android, some mobile phone manufacturers in China and Asia have developed and launched a third-party smart operating system based on Android smart operating system, which comes from Chinese mobile phones.

The third-party smart operating system based on the Android smart operating system of the manufacturer is the most extensive, such as Flyme (Flyme is the smartphone operating system deeply customized by Meizu based on the Android system.

The latest version is Flyme8, which supports Meizu series mobile phone products.), IUNI OS, MIUI, Le Frog, Dim Sum OS, Tencent tita, Baidu Cloud OS, Le OS, CyanogenMod, JOYOS, Emotion UI, Sense, LG Optimus, Moqu, OMS, Baidu Cloud Easy, Blur, EMUI, Aliyun OS.

Apple iOS

An intelligent operating system developed and launched by Apple.

Launched in the form of closed source code (closed source), so it can only be used exclusively by Apple.

As of November 2011, according to Canalys data, iOS has occupied 30% of the global smartphone system market share in the United States.

With a market share of 43%, it is the world’s second largest smart operating system. IOS’s strongest competitor in the world is the Android smart operating system launched by Google and the Windows Phone smart operating system launched by Microsoft.

However, iOS has unique and extremely user-friendly, extremely powerful interface and performance are loved by users.

Supporting manufacturers: Apple (closed source).

Microsoft Windows Phone

The intelligent operating system developed by Microsoft

Nokia luma series

At the same time, Google’s Android and Apple’s iOS are listed as major competitors. In the early days, it was the fifth largest smart operating system in the world.

As of August 2012, Microsoft Windows Phone (including the old Windows Mobile series and Windwos Phone series) occupies the world.

The market share of smart phone system is 24%, surpassing BlackBerry and Symbian, becoming the third largest smart operating system in the world, the glory of a brand new smart operating system begins, and, in the past few years, the world’s first.

The big mobile phone manufacturer Nokia and Microsoft have reached a global strategic alliance and cooperated in depth to jointly develop Windows Phone, so it is expected that in the near future, Google’s Android and Apple’s iOS, the world ’s top two smart operating systems, will usher in new strong competition. opponent.

Supported manufacturers: Nokia, Samsung, Huawei, HTC.

Blackberry

An intelligent operating system developed by RIM.

In fact, Blackberry is the English name for Blackberry.

It is an independent system developed by RIM and supporting BlackBerry.

It is very popular all over the world. On the basis of this system, BlackBerry's mobile phones are unique in the smartphone market. It has also formed a big fan in China. From January 30, 2013, RIM and Blackberry merged.

In July 2012, Blackberry accounted for 7% of the global smartphone operating system market share, a total of 11% of the US market The share is the world's fourth largest smart operating system, surpassed by Microsoft's Windows Phone smart operating system.

Supporting manufacturers: RIM.

Symbian

The Saipan company developed and launched the Saipan operating system, and also has a smart operating system and a non-smart operating system.

When Saipan was acquired by Nokia, it was adopted by Nokia many times and developed a lot of non-smart phones and smart phones. Nokia adopted Symbian to become the world's largest mobile phone manufacturer.

Symbian was once the world's largest mobile phone operating system. However, due to the advent of Apple's iOS and Google Android smart operating systems, the Symbian smart system has become the world's first mobile phone operating system. The big intelligent operating system is degenerate,

Saipan

It also devalued Nokia, which was once the world's largest mobile phone manufacturer, to the position of the world's third largest mobile phone manufacturer.

In order to reverse the decline, Nokia announced in February 2011 that it had reached a strategic cooperation with Microsoft and would start design and production based on Microsoft's launch.

Because of the lack of new technology support for the Windows Phone operating system smartphone, Symbian's market share is shrinking. As of February 2012, Saipan ’s global market share was only 3%, and China’s market share fell to 2.4%.

Saipan has fallen from the world’s largest smart operating system to the world’s top five smart operating systems.

Now that no mobile phone manufacturer in the world adopts Symbian, Nokia also confirmed in the fourth quarter 2012 financial report that Nokia 808 PureView is Nokia's last Symbian operating system mobile phone, so it can also declare that Symbian is dead.

With the good memories of a generation of users, a Saipan operating system that once experienced a glorious era came to an end.

Supported manufacturers: Nokia, Samsung, LG, Sony, Ericsson, Sony Ericsson.

Samsung bada

bada is a new smart phone operating system developed and launched by Samsung Group, which will form a competitive relationship with Android and iOS, which are currently widely concerned.

The smart operating system combines the current hot experience operation mode, inherits the experience of Samsung TouchWIZ, supports Flash.

The interface has good support for Internet applications, gravity sensing applications, and SNS applications.

E-commerce companies and game development companies are also included in the main plan of the bada system. Twitter, CAPCOM, EA, Gameloft and other companies are close partners of bada.

In May 2012, bada accounted for 2.7% of the global smartphone operating system market, making it the sixth largest smart operating system in the world.

Supporting manufacturers: Samsung

Meego MeeGo

MeeGo is Nokia and Intel jointly announced the launch of a free mobile smart operating system.

The Chinese nickname Midog, like Android, is an open source smart operating system that can run on a variety of electronic devices such as smartphones, laptops, and TVs, and helps these devices achieve seamless integration.

This Linux-based platform is called MeeGo and combines Nokia's Maemo and Intel's Moblin platform. For example, Nokia's new Nokia N9 uses MeeGo1.2 system.

On September 28, 2011, following Nokia's announcement to abandon the development of MeeGo, Intel also officially announced the merger of MeeGo and LiMo into a new operating system: Tizen.

On July 8, 2012, a group of former Nokia employees and enthusiasts interested in the MeeGo operating system created a mobile startup called jolla mobile, which will release a new generation of MeeGo smartphones in China.

The company's goal is to produce high-quality MeeGo smarts Mobile phones, create greater glories.

Supported manufacturers: Intel, Nokia, Fujitsu, Samsung, Lenovo, Acer, Asus, AMD, LG, ZTE, Huawei, Konka, Gionee, Haier, Dopod, Tianyu, BBK, TCL, Hisense, Coolpad, Changhong.

MeeGo representative models: Nokia N9

Other systems

HTML5-based firefox operating system, Jolla's Sailfish, Tizen, Ubuntu-based mobile phone system, etc.

Although these new smartphone operating systems also have a lot of highlights, due to the short launch time (some may not be actually listed), the market popularity is generally low.

Hardware system

CPU

The hardware architecture of the smart phone discussed in this article uses a dual-CPU architecture, as shown in the figure.

Hardware architecture of Smartphones

The main processor runs an open operating system and is responsible for the control of the entire system.

The slave processor is the DBB (digital baseband chip) of the wireless Modem part, which mainly completes the A / D conversion, D / A conversion of the voice signal, the codec of the digital voice signal, the channel codec and the timing control of the wireless Modem part.

The master and slave processors communicate through the serial port. The main processor adopts the CPU chip of XXX company, it uses CMOS process, has ARM926EJ-S core, uses ARM company's AMBA (advanced microcontroller bus architecture), and contains 16 kB of instruction cache and 16 kB of data cache And MMU (Memory Management Unit).

In order to realize the real-time video conference function, it carries an optimized MPEG4 hardware codec.

It can perform hardware processing on the MPEG4 codec and voice compression and decompression with a large amount of calculation, thereby alleviating the arithmetic pressure of the ARM core.

The main processor contains LCD (liquid crystal display) controller, camera controller, SDRAM and SROM controller, many general GPIO ports, SD card interfaces, etc.

These enable it to be very well used in the design of smart phones.

In the hardware architecture of a smart phone, the wireless modem part only needs to add certain peripheral circuits, such as audio chip, LCD, camera controller, microphone, speaker, power amplifier, antenna, etc., is a complete ordinary mobile phone (traditional mobile phone) Hardware circuit.

The analog baseband (ABB) voice signal pin communicates with the audio codec chip to form a voice channel during a call.

From the system architecture of this hardware circuit, it can be seen that the parts with the most power consumption include the main processor, wireless modem, LCD and keyboard backlight, audio codec and power amplifier. Therefore, in the design, how to reduce their power consumption is an important issue.

Sensor

Smart phones have been gradually deepened and widely used in people's daily lives, and people's requirements for smart phones are also increasing.

Many people will wonder, how does a smartphone achieve various functions such as automatic screen switching? In fact, this is all credit for the sensor.

Smart phones can automatically rotate the screen, how is this achieved?

This depends on the acceleration sensor, that is, the gravity sensor. The acceleration sensor can measure acceleration, and can monitor the magnitude and direction of the acceleration of the mobile phone. Therefore, the acceleration sensor can be used to automatically rotate the screen and be used in some games.

The distance sensor is also used in smart phones, which can determine the position of objects through infrared light.

When the distance sensor is used in a smart phone, the phone will have multiple functions, such as automatically turning off the screen to save power after connecting the phone, and also can realize special functions such as "quick glance".

The barometric pressure sensor can detect changes in atmospheric pressure, and when used in mobile phones, it can achieve functions such as atmospheric pressure, current altitude detection, and assisted GPS positioning.

The light sensor is also commonly used in mobile phones, mainly used to adjust the brightness of the mobile phone screen itself according to the ambient light to improve battery life.

Ground transmitter

Australian startup Locata is trying to bring GPS to the ground to overcome GPS limitations.

The company made positioning transmitters with the same principles as GPS, but installed on buildings and base station towers.

Because the transmitter is fixed and provides a stronger signal than satellite, Locata can provide very accurate positioning.

The company's CEO Nunzio Gambale said that the Locata network is also more reliable than GPS.

Electronic compass

Is it necessary to install an electronic compass on mobile phones with GPS function?

In fact, it is necessary, because the mobile phone is likely to lose the GPS signal in the woods or in the buildings, and the electronic compass can better protect you from getting lost.

After all, the earth’s magnetic field will not be unreasonable.

The end disappeared. More importantly, GPS can only judge where we are. If we are stationary or moving slowly, GPS cannot know the direction we are facing. So mobile phones with electronic compass can make up for this.

Processor

The most important thing for a smartphone with excellent performance is its "core", which is the CPU.

Like the computer CPU, it is the control center of the entire mobile phone and the control center of the logic part.

The microprocessor achieves the goal of controlling the mobile phone by running the software in the memory and calling the database in the memory.

Mainstream mobile phone processors:

Texas Instruments CPUs commonly used in Texas Instruments smartphones have a series of OMAP710 / OMAP730 / OMAP733 / OMAP750 / OMAP850.

Texas has the advantages of low frequency and high energy consumption and low power consumption.

CPUs are necessary for high-end smartphones.

Samsung Exynos

In February 2011, Samsung Electronics officially named its ARM-based processor brand Exynos.

Exynos is a combination of two Greek words: Exypnos and Prasinos, meaning "smart" and "environmentally friendly", respectively.

Exynos series processors are mainly used in mobile terminals such as smart phones and tablet computers.

The iPhone 3GS that we are familiar with uses the Exynos processor. Compared with other CPUs, Exynos has the advantages of low power consumption and powerful graphics processing functions.

NVIDIATegra 2 is a new generation of SoC system-on-chip processors released by NVIDIA at CES in Las Vegas, USA, specifically for mobile Internet applications, especially high-definition tablet PCs.

NVIDIA Tegra 2 is based on TSMC's 40nm process and contains a total of 260 million transistors with a core size of approximately 49mm and an 8.8mm BGA package.

It includes an audio decoding core, a video decoding core that supports 1080p H.264 hardware acceleration, a high-definition video encoding core, a picture / photo processing core that supports up to 12 million pixel cameras, a GeForce 2D / 3D graphics core, and a user interface ARM 7 processor core for on-chip data / power management.

Qualcomm does not seem to be as loud as Texas Instruments and Intel, but among smartphone players, Qualcomm is much more popular than the first two.

Qualcomm's mobile phone chipset mainly includes MobileStationModems (MSM chipset), single chip (QSC) and Snapdragon platform. It can be compatible with various smart systems. We can find it in mainstream smartphones of various manufacturers.

Qualcomm CPU is characterized by excellent performance and strong multimedia parsing ability. It can be launched as an economical and multimedia based on mobile phones with different positioning.

Enhanced and Fusion four different chips. At the same time, Qualcomm's CPU chip is the first to be compatible with the Android system, so it occupies half of the Android mobile phone CPU.

Android is the trend of the future intelligent system. Qualcomm is like adding wings to this ready-to-take Android, and the prospect is bright.

INTEL ATOM Intel Atom processor is the smallest and smallest power consumption processor in Intel's history, and has the characteristics of high frequency and low energy consumption.

Based on the new micro-processing architecture, Atom is specifically designed for small devices to reduce product power consumption, while also maintaining compatibility with the Core 2 dual-core instruction set.

The product also supports multi-threaded processing.

All of these are only integrated on a chip less than 25 square millimeters, containing 47 million transistors. The area of 11 such chips is equal to the area of a penny coin.

In fact, the Atom processor is what we called "Silverthrone" and "Diamondville" before.

The main function of Android Android smartphone

Broadly speaking, in addition to the phone's calling function it also has most of the functions of PDA, especially personal information management and browser based on wireless data communication, GPS and e-mail functions.

Smart phones provide users with sufficient screen size and bandwidth, which is convenient for carrying around, and provides a broad stage for software operation and content services.

Many value-added services can be launched on this, such as stocks, news, weather, transportation, commodities, application download, music picture download, etc.

Combined with the support of 3G communication networks, the development trend of smart phones will inevitably become a powerful personal integrated terminal device integrating call, SMS, network access, film and television entertainment.

Main Smart phone function

Although there is no standard industry definition for "smart", we can define whether it belongs to a smartphone by the following functions:

Operating system: Generally speaking, a smartphone will be based on an operating system that can run programs.

Software: Almost all mobile phones include some form of software (the most basic model is to include an address book or some form of contact assistant, for example), and smartphones will be able to do more work.

It allows you to create and edit Microsoft Office documents-or at least view archives.

It may allow you to download applications such as personal and corporate financial assistants. Or, it allows you to edit photos, plan driving directions through the global positioning system, and create a digital music player.

Web access: More smartphones can enter the site at a faster speed. The phone can connect to 3G data networks and add Wi-Fi support. However, not all smartphones provide high-speed Internet access, but they all provide some form of access. You can use your phone to browse your favorite websites.

QWERTY keyboard: According to our definition, the smartphone includes a QWERTY keyboard.

They will be on your computer keyboard-instead of the numeric keypad at the top in alphabetical order, where you have to use number 1 to enter an A, B or C keyboard that can be hardware (physical keyboard) or software (same as touch screen, Such as iPhone).

Smartphone

Messaging: All mobile phones can send and receive text messages, and apart from a smart phone that handles email, a smart phone can synchronize your personal- and sometimes your professional-email account.

Some mobile phones can support multiple email accounts.

Others include: access to popular instant messaging services such as QQ, MSN, and AOL’s AIM and Yahoo.

In addition, smart phone functions also include:

Mail: Usually smart phones are designed for business people, and the main contact method for global business is not phone or SMS but mail, especially in trading companies or global companies.

Mail is a business. The main content that people deal with in a day, and the first thing a smartphone needs to support is email.

Contacts: In addition to mail, you need to call the contact phone book during the call,

Smart phone w999

Most people keep the phone book only on their mobile phones. Losing or replacing the mobile phone.

The huge address book is quite inconvenient. The smarter people use the data cable to synchronize with the computer, but the real correct way to use it is to synchronize by wireless.

Regardless of the contact changes made on the computer or mobile phone can be effectively synchronized.

Calendar: Business mobile phone scheduling is a good feature. However, due to the operational problems of the mobile phone, few people will arrange everything on the mobile phone, and then they need to synchronize with the computer.

Support document viewing and writing: In addition to the above, business mobile phones can also process documents in daily work to ensure that mobile phones become a mobile working platform.

The relationship between the smartphone and Pushmail. When the mobile phone can wirelessly communicate with the computer for email communication, calendar, contact synchronization, and can process various office documents, it really releases its intelligence.

Pushmail can achieve wireless synchronization, it can release all the functions of a smartphone, making a mobile phone a time management tool and a mobile work platform.

There are two types of Push Mail, one is the BlackBerry BES service for BlackBerry, and the other is the Microsoft Exchange service.

For example, Shanghai Aidesi provides Exchange and BlackBerry Pushmail services for individuals and enterprises.

Both services are based on a commercial-grade mail system, such as the Exchange service.

You can use the mailbox as a working platform to process a day’s mail, calendar, contacts, tasks, and documents.

The operations on the computer are synchronized with the mobile phone wirelessly, while the external, in the process, the content processed by the mobile phone will be wirelessly synchronized with the company's computer.

What are the multitasking function in smartphones?

Multitasking and copy and paste are considered to be one of the symbols of smartphones.

Symbian and MeeGo operating systems can support multitasking switching and program running in the background, but Apple needs to achieve IOS4 firmware to support multitasking, while Windows Phone It was announced on February 15, 2011 that it will support multi-task operation.

Android phones have become the most popular smartphones due to their free and open source features. Smartphone processor = CPU (data processing chip) + GPU (graphics processing chip) + other.

The bottom layer of the smartphone processor architecture is ARM, just like we said that the PC architecture is the same as X86.

ARM is also a company that provides various embedded system architectures to some manufacturers, such as the popular Cortex-A8 The architecture is launched by ARM, and many high-end flagship smart machine processors are based on this architecture.

Common smartphone processing chip manufacturers mainly include Texas Instruments, Apple, Samsung and Qualcomm.

Smart phone development requires controls. Developers will encounter the problem of how to display the interface and interaction on the smartphone platform.

The control solves this problem. Compared with traditional devices, smart phones support hand touch, so smart phone controls are also more focused on touch screen mobile devices and designed functions.

Traditional controls, such as buttons, text boxes, and date controls have also added support for smartphone platforms. But as smartphone platforms become more and more complex, people's needs are getting higher and higher.

More beautiful interface, more concise and fast operation, more convenient controls.

More controls come out on the smartphone, making development and programming on the smartphone an easy task. Effectively help users create mobile applications.

Other Main Smart Phone Functions

⒈ 4G LTE

4G LTE is the future of mobile connectivity. Without 4G capabilities, smartphones will fall behind.

⒉ 4 inches or larger display

For a while, the 3-inch display was the standard in the mobile market. However, companies such as HTC, LG, and Samsung launched new products in 2012.

These manufacturers all require competitors to introduce 4-inch or larger displays. Even Apple is expected to increase the size of the display.

⒊ The latest OS style

There is no excuse for manufacturers to launch devices without the latest version of the operating system.

In the field of Windows Phone 7, "mango" is a must.

So far, at least all manufacturers have recognized this problem and will provide products with the latest OS (operating system style).

⒋ Cancel physical keyboard

Although RIM is one of the few manufacturers who insist on using physical keyboards, the idea of launching a mobile phone with a physical keyboard is not attractive to many consumers.

Therefore, in 2012, most mobile phone manufacturers will abandon the plan to provide a physical keyboard, this is a very good choice.

⒌ Support from a single operator

Interestingly, Apple is one of the few manufacturers that offers a device on multiple operator networks.

Apple’s iPhone 4S is provided to users of operators such as AT & T, Verizon and Sprint. However, major competitors such as Samsung and Motorola offer many models of mobile phones on one carrier network. This is a ridiculous move and is something Apple is using.

⒍ Lower price

When Nokia launched the $ 99.99 Lumia 900 phone, many industry observers were surprised. They thought that the price of Nokia's phone would be $ 199 for Apple's iPhone 4S.

However, the prices of other high-profile phones launched in 2012 are also very low.

The Samsung Focus 2 costs only $ 50. At this week's CTIA (American Wireless Communications Exhibition) exhibition, it is expected that many low-cost eye-catching mobile phones will appear. This is an interesting change.

⒎ Quad-core processor

When Samsung launched the Galaxy S III smartphone, Samsung said that the phone will be equipped with a quad-core Exynos processor.

This is one of many mobile phones with quad-core processors launched in 2012. 2011 is the year of dual-core mobile phones, and 2012 is the year of quad-core mobile phones.

⒏NFC function

Despite the mobile payment function, every operating system-based device launched in 2012 will have a remote payment function.

When Isis, a mobile payment solution sponsored by wireless carriers, is launched later in 2012, more devices will support the service.

Some people even say that Apple will provide NFC (near field communication) for iPhone 5s in 2012. NFC was a popular feature in 2012.

9. 32 GB storage

Interestingly, most first-rate phones launched in 2012 will be equipped with 32GB of internal storage. For example, Samsung Galaxy S III is equipped with 32GB of built-in storage.

Apple is expected to select 16GB and start offering iPhones with 32GB and 128GB storage capacities. Storage demand seems to be growing. Is the storage capacity of smartphone users actually not enough?

10. Improved camera

As digital cameras become more powerful, digital cameras built into smartphones will become more powerful.

In fact, mobile phones launched in 2012 will increasingly use advanced features, including 8 megapixels and improved autofocus lenses. This makes many people consider using their smartphones to take pictures.

The improved camera has become a key component in smartphones.

11. Positioning and tracking GPS

The Global Positioning System was developed by the US Department of Defense and first appeared in mobile phones in the 1990s. It is still the most well-known method for outdoor positioning.

GPS directly sends location and time data to users' mobile phones via satellite. If the mobile phone can obtain the signals of three satellites, it can display the user's position on the flat map, if it is four satellites, it can also display your altitude.

Other countries have also developed systems similar to GPS, but they do not conflict with GPS.

In fact, these systems can make outdoor positioning easier. GLONASS in Russia has already been put into use, and Compass in China is also in the trial stage.

Europe's Galileo and Japan's Quasi-Zenith satellite systems are also under development.

Mobile phone chip manufacturers are developing processors that can use multiple satellites to obtain positioning information faster.

12. Assisted GPS technology

Although GPS works well, it may take a long time, and when you are indoors or in a building complex that reflects satellite signals, you will not be able to accurately locate it.

Assisted GPS is a combination of tools to help solve this problem.

One of the reasons for the longer GPS waiting time is that when a satellite is discovered, the mobile phone needs to download the position information of the satellite in the next four hours to track the satellite.

Only after the information reaches the mobile phone, the full GPS service will be activated.

Operators can send this data over cellular or wireless networks, which is much faster than satellite links.

Guylain Roy-MacHabee, CEO of positioning technology company RXNetworks, shows that this can help reduce GPS startup time from 45 seconds to 15 seconds or less, which is unpredictable.

13. Synthetic GPS

The above-mentioned assisted GPS technology still requires an available data network and time to transmit satellite information. Synthetic GPS uses computing power to predict satellite positioning a few days or weeks in advance.

Through the cached satellite data, Wangwang Mobile can identify the satellite position within two seconds.

14. CellID

The above GPS acceleration technology still needs to find three satellites to locate.

Operators already know how to locate mobile phones without GPS.

Operators use a technology called CellID to determine which Cell base station users are using and their distance from neighboring base stations.

After determining the base station that the mobile phone is using, using the database of base station identification numbers and locations, the operator can know the location of the mobile phone. This technology is more suitable for urban areas with wide coverage of base stations.

15. Wi-Fi

Wi-Fi is similar to CellID positioning technology, but it is more accurate because the Wi-Fi access point covers a smaller area.

In fact, there are two ways to determine the location through Wi-Fi.

The most common method is RSSI (Receive Signal Strength Indication), which uses the signal detected by the user's mobile phone from a nearby access point and reflects it to the Wi-Fi network database.

The signal strength is used to determine the distance, and RSSI determines the user distance by knowing the distance of the access point.

16. Inertial sensor

If you are in a place without a wireless network, inertial sensors can still track your location. Most smartphones are equipped with three inertial sensors.

A compass (or magnetometer) to determine the direction; an accelerometer to report your speed in that direction, and a gyroscope to determine the steering action.

These sensors can determine your location without external data, but only for a limited time, such as a few minutes.

The classic example is when driving to a tunnel. If your phone knows where you are before entering the tunnel, it can judge your position based on your speed and direction. These tools are often used in conjunction with other positioning systems.

17. Barometer

Outdoor navigation on sidewalks or streets is either straight, turn left or turn right. But for indoors, GPS is difficult to make correct positioning.

One method of determining altitude is the barometer, which uses the principle that the higher the altitude, the thinner the air.

18. Ultrasound

Sometimes detecting whether someone enters a certain area can explain what they are doing.

This can be achieved with short-range wireless systems, such as RFID (radio frequency identification).

NFC (Near Field Communication) began to appear in mobile phones and can be used for checkpoints, but the main purpose of manufacturers installing NFC is to pay.

19. Bluetooth signal

Using beacons that signal via Bluetooth can achieve very precise positioning in specific areas, such as in retail stores.

These beacons, which are smaller than mobile phones, are placed every few meters and can communicate with all mobile devices equipped with Bluetooth 4.0 (the latest version).

HDR mode

HDR photography has actually appeared 100 years ago. As early as the 1850s, pioneers in the photography industry had already explored this technology at the conceptual and practical levels.

By combining multiple negative exposures of the same scene, they were able to produce more dynamic range.

Big picture, or to put it simply, in a high-contrast scene, the bright areas that end up in the film will not be too bright, and the dark parts will not be too dark.

Gustave Le Gray's photos in 1865 using negative exposure film.

This man is known as "the most important French photographer of the nineteenth century".

At the time, this type of shooting required a lot of time and skill. Today, with the help of digital photography technology, even novices can easily take HDR photos.

In fact, most high-end smartphone camera applications come with HDR mode.

Smartphone CPU

Basic requirements for 3G smartphones

1. High-speed, high-precision processing chip. 3G mobile phones must not only support making calls and sending text messages, but also process audio, video, and even multitasking.

This requires a powerful, low-power, and multimedia processing chip. This kind of chip can make the mobile phone not freeze frequently, not heat up, and will not make the system slow as snail.

2. Large storage chip and storage expansion capability. If you want to implement a large number of 3G application functions, there is no value without large storage.

A complete GPS navigation map needs more than one G of storage space, and a large amount of video, audio, and multiple applications require storage. Therefore, it is necessary to ensure sufficient memory storage or extended storage to truly meet the application of 3G.

3. Large, standardized and touchable display. Only a large and standardized display screen can allow users to fully enjoy the application of 3G. The resolution is generally not less than 320 X 240.

4. Support playable mobile TV. If the mobile TV completely adopts the on-demand mode of the telecommunications network, the network is difficult to bear, and in order to ensure the quality of the network, operators generally control the flow of on-demand video. Therefore, the broadcast mobile TV is an important part of mobile entertainment .

5. Support GPS navigation. Not only can it help you easily find the place you want to find, but GPS navigation can also help you find points of interest around you.

Many future services will also be combined with location, which is unique to mobile phones.

6. The operating system must support the installation of new applications. It is possible to install various new applications so that users' mobile phones can install and customize their own applications.

7. Equipped with a large-capacity battery and supports battery replacement. No matter what kind of low power consumption technology is used in 3G, power consumption is a big problem.

It must be equipped with a high-capacity battery. 1500mAh is standard equipment.

With the popularity of 3G, it is likely that external mobile power will become a standard in the future. Configuration.

8. Excellent human-computer interaction interface.

Smartphones Situation Analysis

Mobile payment

Mobile payment has undoubtedly become a mainstream feature of smart phones in 2012.

In 2012, e-wallets, Square card readers and near-field communication technology became the highlights of smart phones in mobile payment.

In 2012, mobile payment has developed to the level of installing and using mobile payment devices in physical stores, and a number of enterprises that have made mobile payment as their main business and have become famous have emerged.

However, since consumers are used to using bank cards for consumer transactions, mobile payment cannot be accepted by consumers in a short time.

Security status

Statistics show that as of October 2012, the global mobile malware infection rate was about 1%.

According to the calculation of the number of global smartphone (including Android smartphone) users reached 1 billion, that means there were 10 million mobile phones in 2012 Attacked by malware.

According to data released by Kaspersky Lab, in the third quarter of 2012 alone, 9,000 new Android mobile malware appeared in the world.

Another industry insider predicts that by the end of 2013, 18 million Android phones worldwide will be infected with malware.

Patent dispute

Any inventory of smartphones in 2012 cannot be without patent disputes. In 2012, there have been countless events related to lawsuit claims and applications for bans on sales among smartphone manufacturers.

Apple is undoubtedly the protagonist of almost all patent rights disputes in 2012. The dispute with South Korea ’s Samsung ignited the fuse of the global patent war, and Apple won the victory and received $ 1 billion in compensation.

In addition, mobile phone giants such as HTC, Motorola Mobile, RIM, Nokia, etc. have also fallen into the patent dispute of "shrinking chaos and chaos".

Looking ahead to the global mobile phone market in 2013, one thing has become inevitable, that is, the battle for patent rights in the industry will continue to exist.

Smartphone Market analysis

Data

The situation has not changed significantly. Samsung is still the most popular smartphone brand for Android users, with nearly 30% of the share of attention, far ahead of other brands.

As can be seen from the above figure, Samsung, Apple, and HTC brands continue to occupy the top three positions of attention, and Samsung's dominant position cannot be shaken in a short time.

In April, the number one sales of Android smartphones in China was Samsung / Samsung I8190, and the second place was Samsung / Samsung I9300 GALAXY SIII.

According to IDC data, in addition to the bottleneck of smartphone sales in the United States, the growth rate of smartphones in the European market has also fallen to a new low, only 12%.

Since the smartphone market is quite mature, even the release of a new version of the iPhone will not make this market more exciting again.

In June 2013, Samsung's market share dropped by 17%. Even with the launch of the Galaxy S4, this trend cannot be changed. It seems that the flagship phone cannot help Samsung return to the past rush-style growth.

It has been rumored that Apple will launch a cheap version of the iPhone to occupy the market, which shows that even if it is not as bad as Apple's, it must find a way to develop the low-end market, and the saturation of the high-end market is not enough to continue to maintain the growth in the past.

On December 16, 2014, market research company Gartner released the global mobile phone market statistics report for the third quarter of 2014 on Monday.

The report shows that global smartphone sales in the third quarter increased by 20% year-on-year to 301 million units. Among the top five smartphone manufacturers, Chinese brands Huawei, Xiaomi and Lenovo occupy three seats.

Smart Phone Price

The gradual maturity of the core technology of smart phones has caused the cost of mobile phone core components to drop rapidly.

The mass production of high-performance and low-cost functional modules has made the price of domestic mobile phones more and more popular, and the thousand yuan machines that strive for the market at low prices are popular.

Mobile phone users in first- and second-tier cities have basically popularized the latest smartphone models. In the future, the main market for new HIPAA compliant tele-health usable smartphones will shift to third- and fourth-tier cities.

The consumption power and consumption habits of third- and fourth-tier cities have made low-cost mobile phones launched by well-known domestic brands such as ZTE and Huawei occupy more market share, driving the overall average price of smartphones to continue to decline.

Smart Phone Brands

Nokia

Main operating systems supported: Symbian, Windows Phone, Meego

Brand area: Finland

Main models: 5230, 5800, N79, N95, N86, N81, N96, C7, N8, N9, Lumia 720, Lumia 820, Lumia 920, Lumia 925, Lumia 1020, etc.

Samsung

Mainly supported operating systems: Symbian, Tizen, Android (TouchWiz), Bada, Windows Mobile (less), Windows Phone.

Brand area: South Korea

Main models: Galaxy S Ⅱ, Galaxy Note Ⅱ, Galaxy S Ⅲ, Omnia M, i8510, i458, l878, etc.

Apple

Main support operating system: iOS

Brand area: United States

Main models: iPhone 3GS, iPhone 4, iPhone 4S, iPhone 5, iPhone 5C, iPhone 5S, iPhone 6, iPhone 6 Plus, iPhone 6S, etc.

Prospect

The shipment volume of China's mobile phone industry fell for the seventh consecutive quarter.

The data of the mobile phone industry in the first quarter of 2014 just released by the Ministry of Industry and Information Technology showed that mobile phone shipments were 100 million units, a year-on-year decrease of 24.7%.

At the same time, another worrying phenomenon is the innovation of mobile phone categories, which has also fallen sharply.

Samsung said on April 9, 2014 that the slowdown in smartphone sales continued to put pressure on revenue, and the company's net profit will decline for the second consecutive quarter.

(Approximately RMB 49.5 billion), down 4.3% year-on-year.

On April 10, 2014, the Ministry of Industry and Information Technology released the "Operational Status of China's Mobile Phone Industry" in the first quarter of 2014.

The data showed that mobile phone shipments were 100 million units, a year-on-year decrease of 24.7%. The IDC’s “Quarterly Tracking Report on the Mobile Phone Market in the Asia-Pacific Region” previously revealed that China s mobile phone shipments in the fourth quarter of 2013 were 90.8 million units, a decline of 4.3% compared with 94.8 million units in the third quarter.

At the MWC conference in February 2014, although the major mobile phone manufacturers came up with housekeeping products, they were still spit out by the media for lack of new ideas.

Smartphones have formed a path dependence, and product upgrades have almost followed the existing route, namely larger screen size, higher resolution, faster processors, more cores, thinner bodies, higher lens pixels, etc.

It has been a long time since I saw real disruptive innovation.

In 2014, several major manufacturers were gearing up to expand shipments. Xiaomi said it would reach 60 million, Huawei previously said it would reach 80 million, and Coolpad and Lenovo also planned to ship 60 million.

Behind the rush of manufacturers, the market is not that big.

The data shows that the penetration rate of the US smartphone has reached 64.7%, the penetration rate of the EU smartphone market has reached 55%, South Korea has reached 73%, and China is close to 40%.

To digest production capacity can only rely on emerging countries, but according to the speed the time will not be too long.

After most people have a smartphone, the demand for replacement will gradually weaken when the phone configuration is high enough and the new models are not attractive.

Under the trend that intelligence is increasingly generalized to various hardware, mobile phones are more of a connection center, storage center and screen.

From this perspective, smart hardware still needs a mobile phone, and it will not subvert the mobile phone, but it is inevitably dispersed.

The use of mobile phones is just like the current relationship between mobile phones and PCs.

Mobile phones will not reduce PCs, but will reduce the use of PCs, thereby reducing the update rate of PCs.

Application field

Social network

With the advent of the mobile Internet era, the popularity of smart phones has become a major trend in the mobile phone market.

The emergence of this type of mobile smart terminal has changed the lifestyle of many people and the demand for traditional communication tools.

People are no longer satisfied with the appearance and basic functions of mobile phones, and began to pursue the powerful operating system of mobile phones to bring more people.

Stronger and more personalized social services. Smartphones have almost become an indispensable representative configuration of this era. Today, more and more consumers have targeted their smartphone purchases.

Compared with traditional feature phones, smart phones are more portable, smart, and so on, so that they can better satisfy consumers' mobile internet experience in application functions such as entertainment, business, news and services.

Military field

US Army soldiers are using allotted iPhone smartphones

Since the advent of smartphones, the military of many countries has realized its military value and actively developed supporting combat application systems.

In June 2011, the US Army conducted a six-week battlefield environment test on more than 300 different models of smartphones, including the iPhone, at the White Sands Training Base in New Mexico and the Billysburg Training Base in Texas.

Used for battlefield communications and reconnaissance

Through 3G, 4G and other wireless communication systems, smart phones can quickly establish a military communication network to achieve the transmission of combat instructions and intelligence.

Combatants can use their smartphones to take pictures and video of key targets and their surroundings, and automatically upload GPS information to combat units or headquarters.

The latter can quickly perform cruise missile target area matching guidance based on this, further shortening from finding targets to Time to strike the target, improve combat effectiveness.

Use battlefield situational awareness terminal

Combatants can receive intelligence information obtained from various reconnaissance systems through smart phones, forming a comprehensive and comprehensive battlefield situational awareness. A US company has developed the "Raytheon Intelligent Tactical System".

As long as the query request is entered in the smartphone, all satellite images within 2 kilometers of the surrounding area, as well as air and ground reconnaissance intelligence data can be obtained.

As a terminal of the friendly army tracking system, this military smartphone can also add 10 to 20 comrades to the "friend list", which shows its own situation in real time and better coordinate combat operations.

According to the "Defense" magazine published in the United States in November, the US Navy will equip the sailors and marines on the aircraft carrier with smartphones to monitor and locate the status of ships and aircraft, as well as the personnel on board.

Fire control system

Some of the software on the smartphone can accurately measure the influence of small factors such as wind speed, gravity, and earth speed on the trajectory, correct the shooting elements, and improve the shooting accuracy.

In August 2009, the British army in Afghanistan killed a Taliban commander at a distance of 1853 meters, setting the record of the British army's furthest sniping.

The iphone phone attached to the gun was indispensable. A US company has also configured an iphone smartphone for the M110 sniper rifle. The above functions can be achieved by installing the "Apple Player" system and related software on the aircraft.

Remote control

Through the wireless signal of the smart phone, it can remotely control the micro drones and robots launched by itself, and can also take over other drones and robots to complete reconnaissance and surveillance tasks.

A mini drone developed by a French company can watch the video images taken by the drone on the display screen in real time through a smartphone.

Of course, the large-scale smartphone equipment troops also face many problems: the battlefield is not adaptable enough to fully adapt to the harsh battlefield environment such as high temperature, severe cold, humidity, sand and dust.

The confidentiality is not high enough, and it is easy to be hacked, resulting in the loss of intelligence/

Stability is not good enough, anti-interference ability needs to be improved.

In response to these problems, foreign military forces have made full use of existing technologies to transform civilian smartphones according to operational needs, and vigorously promoted the pace of smartphones equipped with troops.

The U.S. Army, Navy, and Air Forces have all developed their own military smartphone development plans, and have achieved significant results in the Army.

In February 2011, the US Army implemented the "Brigade Level Force Modernization Project", an important part of which was to equip the front-line troops with smartphones.

It is foreseeable that smartphones will soon appear on the battlefield as standard equipment for US soldiers.

market share

Global smartphone market share

The latest report on the smartphone market share in Q1 2014 was released. Samsung and Apple still occupy the top two positions.

This is obviously no suspense. However, the strong outbreak of domestic mobile phones is shocking. Lenovo's acquisition of Motorola has greatly increased its market share, ranking third in the pursuit of Apple.

Also, among the top eight, domestic brands have accounted for half, and the top ten, have accounted for to six seats, such a development situation is enough to excite the Asian people.

Domestic mobile phones have already taken off the hats of the cottage and really used their own strength to catch up with the international big names.

Today, we will take a look at the flagship models of the global smartphone brands TOP8 in order according to their rankings and see how they perform. (The latest top ten rankings: Samsung, Apple, Lenovo (MOTO), Huawei, LG, Sony, Xiaomi, Coolpad, ZTE, Gionee)

Global smartphone operating system

In the global smartphone operating system market share, the number one is still the giant Android, the number two is still the enemy of Android, and the number three is the rising star of the smart operating system.

In the future, it will become a strong opponent of Android and iOS Windows Phone.

The atlas lists the market share of smartphone operating systems in the seven major countries of the United Kingdom, Germany, France, Italy, Spain, Australia, and the United States.

According to the operating system, main problem

Virus problem

Smart phones are the same as the desktops and laptops we use every day.

Based on an open platform, the virus is only a few minutes. In view of this, backing up important data at any time is a must-do when using a smartphone.

Power consumption problem

The power consumption of the smartphone's CPU, screen and other hardware can not be ignored. These hardware can easily run out of power.

In addition, smart phones are increasingly pursuing fashion and thin, and their small battery capacity is even more pitiful Too.

There is no solution in this regard, only to remind smartphone users, don’t be too old to play with the phone.

Flash problem

Precautions for smartphone flashing

1. As long as the machine is connected to the computer, it can be swiped by itself, whether it is in normal use or in a blank screen.

If the mobile phone has no connection with the computer (such as a black screen), then you can't brush well.

2. The ordinary data cable can be used to flash the machine, as long as your data cable is stable to ensure data transmission.

3. Make sure that the battery power of the mobile phone is more than half (or plugged in, but the new Nokia S60 mobile phone cannot be plugged in when brushing, such as 5230, 5800, N97, 6700s, etc. In short, put It is right that the battery is fully charged.) This is very important.

4. Please read the operation instructions of the brush machine carefully and follow the instructions strictly.

5. It is recommended to brush the complete brush package, so that it is safer. Commonly used software are RSD and Flashback.

Supplementary explanation

1. Not all mobile phones can be flashed, for example, some small brands of machines can only go to customer service and some mobile phone companies to flash.

2. Not any problem can be solved by flashing. Some problems may be hardware problems, brushing the machine can not be solved.

3. Brushing is risky, it is best to brush the machine if the risk is controllable. The DIY version is based on the original version, and some core parts have been changed. As long as the method is correct, there is no adverse effect.

As long as you make a backup of your mobile phone software and follow the steps, brushing the machine can basically eliminate the risk (big deal Flash back again).

4. Sometimes the mobile phone can not be turned on or the software may be broken. Repairing it in a special mobile phone store will restore it.

5. For popular Dopod or other mobile phones with windows mobile system, be sure to carefully read the instructions before flashing. Some models need to be cracked first.

6. Motorola has more mobile phone brushes because its principle is different from other models.

Many motorcycles use LINUX system, and LINUX is an open source system.

7. Smart phone flashing can directly use universal USB data cable.

Crash problem

Since it is similar to the Windows, Linux, Ubuntu and other operating systems of the computer, it is an open operating system.

It is commonplace when it crashes due to the interference of illegal programs. So it is best not to install various application software indiscriminately.

In addition, if more software is installed and more files are stored, the data reading and writing speed of the mobile phone will also be slower, which is the same as the "death".

Mobile phones and computers are generally the most prone to crashes in two stages.

One was when someone first bought it, and the other was when they had a certain understanding of the system of the mobile phone, and started to DIY and install software for a few days.

Why do you say that? Because when you first buy, novice users don’t know much about smartphones, there are usually many misoperations, and naturally they will crash and restart. Then after familiar with the operating system, users understand that the functions of smartphones are realized by mass software. So people started to install software and games, and at the same time did not pay attention to management, the crash could not be avoided.

General crash

Generally, crashes occur on smartphones. If a smartphone is used as an ordinary mobile phone and no software is installed, it will not crash easily.

In order to minimize the occurrence of crashes, white screens, or automatic restarts, the recommendations are as follows:

1. After purchasing a smartphone for the first time, you should go to some smartphone forums on the Internet before using it.

Generally speaking, these forums will have the precautions for the use of related systems and related models. Understanding these knowledge can save you a lot of detours.

2. Do not open several programs at the same time with a smartphone. Generally, it is better to use less than 3 programs.

Large programs can only be run one at a time.

Try to exit the program in order to exit the menu one by one, do not directly use the on-hook key.

In that case, the program is still running in the background, if you open a larger program, it is easy to crash.

3. Try not to install software of unknown origin.

4. Pay attention to the protection of the memory card.

Damage to the memory card and errors in the data stored in the card will cause the failure to cycle or fail to start.

Encounter this type of failure, you should first try to format the memory card, if not, you can only replace the memory card.

5. Do a good job of managing the programs on your phone, and don't delete files you think are unnecessary. Some crashes are caused by users accidentally deleting system files.

6. Like a computer, the file system becomes disordered after a long time of use, which slows down the operation of the whole machine and makes it easy to crash.

The solution to this situation on the computer is to reinstall the system, and the smartphone is hard formatted.

After hard formatting, all data on the phone will be cleared, and the file system will be restored to the factory state, so we need to make a backup of relevant data before hard formatting.

Self problems

1) Hardware problem: Generally, it is mainly due to design defects of the hardware itself, damage to the hardware, improper operation, etc. The design defects of the hardware itself often cause mobile phones to freeze.

Mobile phones are precision electronic products, and the circuits in them must be stable.

It can only work normally in the environment where the mobile phone is working in a humid environment or if it is strongly shaken by the outside world, it may crash.

For example, if the phone is accidentally dropped on the ground, the phone may freeze. So try to handle it lightly, and do not use the phone in a humid environment.

If you operate the phone improperly, it will also cause the phone to freeze, especially when sending text messages, if the key operation speed is too fast or it is bombarded by short messages in a short period of time, resulting in excessive CPU load on the mobile phone.

The heat cannot be emitted, so it will cause the phone to freeze. Therefore, when using a mobile phone, you must pay attention to the operation.

In addition, there are other factors that cause crashes due to hardware problems, such as aging of the hardware and the harsh environment of the mobile phone.

2) Software problem: Mainly because of a fatal bug in the software design of the mobile phone, resulting in a crash.

For example: when the mobile phone runs a program, if there is a logical error between the subprogram and the main program, every time the mobile phone runs to the program, a command error will occur, a bit like an illegal operation in the computer At this time, there may be a crash.

Crashes caused by software bugs generally have such characteristics.

Whenever a certain command is run, that is, every time the same operation is performed, the crash occurs.

If the phone keeps crashing like this, you can preliminarily conclude that it is due to a software problem. Solving such crashes can usually be done by software upgrade.

However, if your phone crashes frequently, you should pay attention to it. It is best to send your phone to the customer service center for overhaul. That is the best solution.

Low temperature problem

From an experience point of view, a smart phone will not only turn off automatically due to overheating under the scorching heat, but also turn off automatically due to the extreme cold. Once the temperature returns to normal, the phone will wake up.

Contributor and technology entrepreneur Seth Porges concluded by observing a series of related experiments in "Volkswagen Machinery" that smartphones are indeed premature because of the low temperature, but everything is normal when it returns to normal temperatures.

Porges talked about an extreme condition test of mobile phones between him and Environ Lab.

Environ will control the test temperature drop and monitor the real-time changes of the smartphone until the smartphone screen becomes black.

Porges mentioned that the experiment found that when the temperature dropped to minus ten degrees, the screens of some smartphones began to dim and quickly entered a low-power state.

When the temperature reached minus twenty degrees, some devices automatically shut down and continued to drop to minus zero.

At thirty degrees, almost all devices have battery and screen problems and are in an unusable state. And once it enters minus 40 to 55 degrees, all equipment will be closed.

Linda F. Nazar, a professor of chemical and electrical engineering at the University of Waterloo, said that most smartphones will not be permanently damaged in the cold, but some cheap lithium batteries may be affected.

For safety reasons, you should try to avoid using your smartphone in the cold.

Most of the batteries used in smartphones are lithium batteries, and lithium batteries can easily precipitate out under low temperature conditions, resulting in decreased battery performance.

On the other hand, lithium batteries are usually equipped with low-temperature protection.

The metallic lithium in the battery will deposit and no longer react with substances.

Human influence

With the popularity of smart phones, thumb-type typing and WeChat, index finger and middle finger swiping on the screen, may be the most frequent "activity" of many people every day.

A new Swiss study says that regular use of smartphones will leave a strong "sign" on the part of the brain that handles touch.

The researchers performed 1,250 stimulations on the thumb, index and middle fingers of 26 touch-screen mobile phone users and 11 traditional mobile phone users, and recorded their EEG, and then compared the test results with the mobile phone usage records in the past 10 days.

The results show that, compared with users who do not use touch screen technology, smartphone users have increased somatosensory-related cerebral cortical activity, that is, the activity of the brain area that handles finger touch movements.

The head of the research, Alk Gauci, said that the more frequently smartphones are used, the more intensely the somatosensory cortex in the brain, and this frequent touch movement may eventually reshape the way the brain directs the fingers.

What kind of impact does this change have on humans, Gao Xi said, may not be all good news.

If there is evidence that excessive use of smartphones may be related to motor dysfunction and chronic pain. Some researchers believe that frequent use of smartphones may cause problems such as memory loss and inattention.

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