The emergence of mobile phones

As the name implies, mobile phone type refers to the external type of mobile phone. Commonly used classification is to divide mobile phones into straight type, folding type (single screen, double screen), sliding type, rotary type, side sliding type and so on. Android is an open source mobile phone operating system based on Linux platform released by Google on June 5438+065438+1October 5, 2007. The platform consists of operating system, middleware, user interface and application software.

The word Android originally meant "robot". At the same time, the system architecture of Android, like its operating system, adopts hierarchical architecture. From the architecture diagram, Android is divided into four layers, namely, application layer, application framework layer, system running layer and Linux kernel layer.

Before the official release of Android, there were two beta versions at first, and they were named after famous robots.

Astro boy and clockwork robot (AndroidBeta 1.0).

Later, due to copyright issues, Google changed the naming rules to use dessert as their system version code. Dessert naming began when Android 1.5 was released.

As the representative of each edition, the size of desserts is getting bigger and bigger, and then the numerical order of 26 letters is: cupcakes (Android 1.5), doughnuts (Android 1.6), muffins (Android 2.0/2. 1), frozen yogurt (Android 2.2) and frozen yogurt.

Representative support manufacturers: Samsung, Xiaomi, Huawei, Meizu, ZTE, Motorola, HTC, LG, Sony. IOS is a closed-source operating system developed by Apple for iPhone, iPod touch and iPad. Just like its Mac OS X operating system, it is also based on Darwin. Originally, this system was called iPhone OS, until it was announced to be renamed as iOS at the WWDC conference on June 7, 20 10. The architecture of iOS is divided into four layers: core OS layer, core service layer, media layer and Cocoa Touch layer. Has developed to iOS 8. 1.3.

Support vendor: Apple. Symbian operating system is an operating system designed by Symbian company for mobile phones, including joint database, user interface architecture and reference implementation of public tools. Its predecessor was the psychic EPOC. In February 2008, it was acquired by Nokia. Symbian used to be the most used operating system in the mobile market, occupying most of the market share. However, with Google's Android system and Apple's iphone rapidly occupying the mobile phone system market, Symbian has basically lost its dominant position in the mobile phone system. There are many branches of Symbian system, including early Symbian S80, Symbian S90 and Symbian UIQ, as well as the third generation of Symbian S60, the fifth generation of Symbian S60, Symbian^3, Symbian Anna and Symbian Belle. Saipan system officially ended on 20 13 65438124 October, bidding farewell to the historical stage. The last mobile phone equipped with Saipan system is Nokia 808 pureview.

Main support vendors: Nokia, Sony.

Windows Phone is a mobile phone operating system released by Microsoft. At 9: 30 on 20 10,1year 10, Microsoft officially released the smartphone operating system Windows Phone, and listed Google's Android and Apple's IOS as its main competitors. 2012 March 2 1 day, Windows Phone 7.5 landed in China. 2065438+On June 2, 20021day, Microsoft officially released the latest mobile phone operating system Windows Phone 8, which will use the same kernel as Windows 8, and Windows Phone 8 will use the same simplified NT kernel as Windows 8 for mobile platforms, with built-in Nokia Maps. Users can get a better experience by jailbreaking.

Main support manufacturers: HTC, Samsung, Nokia, Huawei. MeeGo is a free mobile operating system jointly launched by Nokia and Intel, nicknamed m a dog in Chinese. The operating system can run on many electronic devices, such as smart phones, laptops and televisions, and help these devices achieve seamless integration. This Linux-based platform is called MeeGo, which combines Nokia's Maemo and Intel's Moblin platform. In 2009, Nokia announced that it would abandon MeeGo and focus on the Windows Phone platform.

Main support vendor: Nokia. With the improvement of people's health level and the extension of population life, the proportion of the elderly in the population is increasing. The elderly, who account for nearly one third of the population, need their own mobile phones. Their requirements for mobile phones are probably simple operation and large display font. After Celot first launched the mobile phone for the elderly, many manufacturers followed suit and developed their own brands of mobile phones for the elderly.

Practical functions: big screen, big font, big ringtone, big buttons, Datong voice;

Convenient life: professional software (visual, simple menu, clear structure), one-button dialing, banknote inspection, flashlight, hearing aid, phone book reading, SMS reading, incoming call reading, dialing reading).

Not only that, but also the functions of improving the quality of life of the elderly: broadcasting radio, Peking Opera, one-click help (pressing the button to make a high-decibel cry for help, dialing a call for help at the same time, and sending help information to a designated number), daily recipes (preferably downloading and updating online), and grocery shopping list. TV mobile phone refers to the technology or application that uses mobile phone as terminal equipment to transmit TV content. There are three main ways to realize mobile TV service:

1. Using cellular mobile networks, such as Sprint in the United States, China Mobile in China and China Unicom all launched mobile TV services in this way.

2. Use satellite broadcasting planned by Korean operators.

3. The digital TV receiving module is installed in the mobile phone to directly receive digital TV signals.

The way to realize it through mobile network: Mobile TV services launched by mobile operators in the United States and China mainly rely on existing mobile networks.

China Mobile's mobile TV service is based on its GPRS network, while China Unicom relies on its CDMA 1X network. This kind of mobile TV service actually uses streaming media technology to launch mobile TV as a data service.

Whether it is a GPRS mobile phone or a CDMA 1X mobile phone, it is necessary to install the corresponding playing software on the mobile phone terminal with operating system (generally high-end products such as PDA mobile phone), and the corresponding TV programs are provided by the mobile communication company or through the corresponding SP organization.

It is a very novel idea to use satellite network and mobile phone to receive TV program signals broadcast by satellite. Only South Korea is promoting this mobile TV broadcasting mode (DMB). The corresponding standards of Korea and Japan have been determined, and this module will be launched in these two places soon. The rest of the world will fall behind.

Samsung, which is responsible for the production of this mobile phone terminal, said that the DMB module will increase the price of mobile phones by 20 to 30 dollars. Samsung expects that this DMB mobile phone and TV service will be launched in the third quarter.

The most promising way of mobile TV technology is through the integration of digital TV and mobile phone. In this way, it is necessary to install a microwave digital TV receiving module on the mobile phone terminal, and the digital TV signal can be obtained directly without the link of the mobile communication network.

Mobile digital TV standards are only DVB-H in Europe and single-band broadcasting standard in Japan. The full name of DVB-H is Digital Video Broadcasting Handheld, which is a transmission standard formulated by European Digital Television Standards Organization (DVB) and used to provide multimedia services to portable/handheld terminals through terrestrial digital broadcasting networks.

DVB-H standard relies on DVB-T transmission system. By adding some additional functions and improving technology, portable devices such as mobile phones can receive radio and television signals stably. The DVB technical discussion group has approved the DVB-H standard. On the other hand, Japan has formulated the specification of "single-band broadcasting" under the standard of its microwave digital TV broadcasting mode "ISDB-T". Although the functions of these two technical specifications are equivalent, there are still great differences between them. Single-band broadcasting is to divide the frequency and reduce the bandwidth, while DVB-H uses the bandwidth of time-division digital multimedia broadcasting to send the data of each channel in pulse mode. Generally speaking, the tuner circuit is turned off at other times except receiving the data of the required channel, so the power consumption can be effectively reduced. As the name implies: a tablet computer that can make phone calls.

Because the portability and aesthetics of tablet computers are beyond the reach of all notebook computers, the traditional concept of smart phones, although they have computer operating systems, are not up to the level of computers due to their functions and uses. In this environment, the mobile phone tablet computer came into being. It not only has all the functions of a mobile phone, but also has the functions of a computer, and has become a veritable tablet computer that can make calls. Smart credit card mobile phone is a combination of integrated encryption chip and PSAM card, which can not only realize the functions of mobile phone, but also realize various business functions such as transfer and remittance, balance inquiry and credit card repayment. All transaction bank card passwords are entered by the built-in random password keyboard, which effectively prevents the unsafe hidden dangers of third-party input methods and is safe and reliable; All data in communication is encrypted by hardware. Point-to-point wireless channel technology supporting APN card and PSAM card is adopted to ensure the security and confidentiality of user's fund transfer. It is a high-tech product with both smart phone and financial self-service terminal to handle financial business. Users can handle business anytime and anywhere, which can save a lot of time and energy, and is convenient and flexible.

Product features:

1, which is a smart phone; 2. Support banking and some convenient services; 3. The transfer payment function can be completed without online banking; 4. Support multiple banks; 5. Use all UnionPay debit cards and credit cards; 6. Multiple encryption to ensure security; 7, simple and easy to operate, easy to use.