What are the uses of mobile phones?

Mobile phones, also known as wireless phones, usually called mobile phones, were originally just a communication tool. In the early days, they were also commonly known as mobile phones. They were portable phone terminals that could be used in a wide range. The earliest It was developed from the field mobile phone manufactured by Bell Laboratories in the United States in 1940. The uses are as follows: \x0d\ Business \x0d\ Business mobile phones, as the name suggests, are mobile phone products with business people or people working in state agencies as the target user group. Business mobile phones are very popular due to their powerful functions. Industry experts pointed out: "A good business mobile phone should help users achieve fast and smooth communication and complete business activities efficiently."\x0d\\x0d\　Image\x0d\ Although imaging mobile phones are an integral part of mobile phones There are many types of mobile phones, but they are mainly mobile phones focusing on imaging functions. The world's first camera phone was the J-SH04 manufactured by Japan's Sharp Corporation in November 2000. As expected, this camera phone uses a CMOS image sensor module, CMOS for short, because CMOS can save more power than the CCD image sensor module used in digital cameras at the time. Keep your phone's battery from running out quickly due to increased use of the camera. \x0d\\x0d\　Learning application\x0d\　Learning mobile phone is to add learning functions on the basis of mobile phone, supplemented by mobile phone, with "learning" as the main purpose; learning mobile phone is mainly suitable for junior high schools, high schools, universities and international students. Dedicated mobile phone. The function it possesses must be an all-round teaching tool that integrates teaching materials and practical textbook learning, with the goal of "teaching". It has an obvious auxiliary effect on learning; it can be carried with you and enter the learning state at any time. This is the value it should have as a learning mobile phone. \x0d\\x0d\ The elderly \x0d\ With the improvement of people's health and the extension of life span, the elderly account for an increasing proportion of the population. The elderly group, which accounts for nearly one-third of the population, needs their own mobile phone. Their requirements for mobile phones may include simple operation and large display fonts. After Serote took the lead in launching mobile phones for the elderly, many Manufacturers have followed suit and developed their own brands of mobile phones for the elderly. \x0d\ Practical functions: big screen, big fonts, big ring tones, big buttons, big call tones; \x0d\ Convenient life: professional software (visualization, simple menu, clear structure), one-touch dialing, banknote verification, flashlight , hearing aids, voice reading phone book, reading text messages, reading incoming calls, reading dialing). \x0d\　Not only that, but also has functions to improve the quality of life of the elderly: external radio, Peking Opera, and one-click distress (a high-decibel distress tone is emitted after pressing the button, and at the same time, a distress call and distress text message are made to the designated number. ), daily recipes (preferably downloadable and updated online), grocery shopping lists. \x0d\\x0d\　Children\x0d\　Children’s mobile phones refer to mobile phone products specially designed and manufactured for children. Compared with ordinary mobile phones, children's mobile phones often have cartoon-like designs and customized functions. It is a children's mobile phone specially developed for children aged 4-14 to facilitate parents to contact and monitor their children. Its design conforms to children's psychological habits and safety education needs. Problems such as excessive radiation and battery quality caused by ordinary adult mobile phones have also become priority issues faced by manufacturers. Some manufacturers have used lithium polymer batteries to replace traditional lithium batteries, and designed the antenna underneath the mobile phone to reduce radiation, effectively improving the safety of children's mobile phones. However, it is recommended that children use mobile phones as little as possible unless necessary, because children's own immunity is not as good as adults. \x0d\\x0d\　Stock trading\x0d\　A stock trading mobile phone is a mobile phone with software installed that can be used to trade stocks. It is also called a stock trading machine, a stock machine, and a stock trading machine. The screen of stock trading mobile phone is relatively large, which is convenient for investors to see real-time data. The stock trading mobile phone used by investors is simple, convenient and easy to carry, so ordinary investors choose to use the stock trading mobile phone for online trading. \x0d\\x0d\Music\x0d\ Music phone, in fact, in addition to the basic functions of a phone (making calls, sending text messages, etc.), it focuses more on the music playback function. It features good sound quality, long-lasting music playback time, and shortcut keys for music playback. Better music mobile phones include Sony Ericsson's WALKMAN series and Nokia's XpressMusic series, and other brands are also involved in this type of mobile phones.

\x0d\\x0d\　TV\x0d\　TV mobile phone refers to a technology or application that uses mobile phones as terminal devices to transmit TV content. There are three main ways to implement mobile TV services:\x0d\　1. Using cellular mobile networks, companies such as Sprint in the United States, China Mobile and China Unicom have used this method to launch mobile TV services. \x0d\　2. Using satellite broadcasting, South Korean operators plan to adopt this approach. \x0d\　3． It is to install a digital TV receiving module in the mobile phone to directly receive digital TV signals. \x0d\ Method of implementation using mobile networks: The mobile TV services launched by mobile operators in the United States and China mainly rely on existing mobile networks. \x0d\　 China Mobile’s mobile TV business is based on its GPRS network, while China Unicom relies on its CDMA1X network. This mobile TV service actually uses streaming media technology to launch mobile TV as a data service. \x0d\　Whether it is a GPRS mobile phone or a CDMA1X mobile phone, the corresponding playback software needs to be installed on the mobile phone terminal equipped with the operating system (usually a high-end product such as a PDA mobile phone), and the corresponding TV programs are provided by the mobile communication company or through the corresponding SP to organize and provide. \x0d\ It is a very novel idea to use satellite networks to implement and use mobile phones to receive TV program signals broadcast by satellites. Only South Korea is promoting this mobile TV broadcasting method (DMB). The corresponding standards in South Korea and Japan have been determined, and this module will be launched in these two places soon. The rest of the world will lag relatively behind. \x0d\ Samsung, which is responsible for producing such mobile phone terminals, said that the DMB module will increase the price of mobile phones by US$20 to US$30. Samsung expects this DMB mobile phone and TV service to be launched in the third quarter. \x0d\The most promising mobile TV technology method is through the integration of digital TV and mobile phones. This method requires a microwave digital TV receiving module to be installed on the mobile phone terminal, which can directly obtain digital TV signals without going through the mobile communication network link. \x0d\　The only digital TV standards for mobile phones are Europe’s DVB-H and Japan’s single-band broadcast standards. DVB-H stands for Digital Video Broadcasting Handheld. It is a transmission standard developed by the European Digital Television Standards Organization (DVB) to provide multimedia services to portable/handheld terminals through terrestrial digital broadcasting networks. \x0d\　The DVB-H standard relies on the DVB-T transmission system. By adding certain additional functions and improved technologies, portable devices such as mobile phones can stably receive broadcast and television signals. The DVB-H standard was approved by the DVB Technical Workshop Group. Japan has formulated a "single-band broadcast" specification under its microwave digital TV broadcast method "ISDB-T" standard. Although the functionality of these two technical specifications is equivalent, there are significant differences between them. Single-band broadcasting divides the frequency and reduces the bandwidth, while DVB-H uses the bandwidth of time-division digital multimedia broadcasting to transmit the data of each channel in a pulse manner. Under normal circumstances, except for receiving data from the required channel, the tuner circuit is turned off at other times, thus effectively reducing power consumption. \x0d\\x0d\　Game\x0d\　Game mobile phones are mobile phones that focus more on gaming functions. The characteristic is that there are buttons specially set for games or buttons that are convenient for gaming, and the screen is generally not small. Such as Sony Ericsson Xperia Play Z1i. \x0d\\x0d\ High-definition movies \x0d\ High-definition movie mobile phones can meet the needs of users to enjoy high-definition movies anytime and anywhere. Generally, the screen size is large and the resolution is high. It mainly focuses on the user's audio-visual experience. At the same time, a large-capacity battery is needed to support watching movies for a long time. There are already many large-screen mobile phones on the market with HD-level screen resolutions (1024×768). For example, Samsung Note2, etc. \x0d\\x0d\　Ultra-thin\x0d\　In the collection of ultra-thin mobile phones, the camera function of the iPhone 5 V version is very powerful. iPhone 5 V supports 1080P full HD video shooting. In addition to enhanced shooting stability, it also adds a smart smile detection function, and can also take photos while shooting, which is similar to HTC One X.

In addition, the Facetime function of the front camera also supports 3G networks. At the same time, the camera used for video calls has an image quality of up to 720P high-definition level, and also has a smile detection function. Although there is no change in the pixel parameters of the iPhone 5 V version camera, the richer and more practical function improvements still have good performance. Coupled with the unique color combination, I want to believe that it is definitely a status symbol. \x0d\\x0d\　Tablet computer\x0d\　As the name suggests: a tablet computer that can make calls. \x0d\ Since the portability and beauty of tablet computers cannot be surpassed by all laptops, and although the traditional concept of smartphones has a computer operating system, it cannot reach the level of a computer in terms of functionality and use. In this environment, , mobile phone tablet computers came into being. This kind of tablet computer not only has all the functions of a mobile phone, but also has computer functions, becoming a veritable tablet computer that can make calls. \x0d\\x0d\　Smart card swiping phone\x0d\　The smart card swiping phone is a combination of integrated encryption chip and PSAM card. It can not only realize the function of mobile phone, but also realize multiple business functions such as transfer and remittance, balance inquiry, credit card repayment, etc. All transaction bank card passwords are entered using the built-in random password keyboard, which effectively prevents the insecurity of third-party input methods and is safe and reliable; all data in communications are encrypted by hardware. It uses APN card point-to-point wireless channel and PSAM card technology to ensure the security and confidentiality of users' fund transfers. It is a high-tech product that combines a smartphone and a financial self-service terminal for financial business processing. Users can process it anytime and anywhere. Business, convenience and flexibility save a lot of time and effort. \x0d\　 Product features: \x0d\ Supports multiple banks; \x0d\ 5. Use of all UnionPay debit and credit cards; \x0d\ 6. Multiple encryption to ensure security; \x0d\ 7. Simple and easy to operate and convenient to use.