Does the licensed mobile phone have 3G function now?

WiFi is a wireless LAN technology led by Intel and other manufacturers, which has been incorporated into Intel Centrino notebook technology. The year before last, China authorities tried to prevent Centrino notebook technology from seizing the China market, formulated a national standard similar to WiFi-WAPI, and announced the implementation date. If WAPI is implemented, WiFi devices such as Centrino notebooks will not be allowed to enter the China market. However, after negotiations between Intel and other manufacturers and the government of China, the implementation of WAPI was postponed indefinitely.

In addition, the Prague meeting that discussed relevant international standards the year before last did not allow the delegation of China to explain that WAPI could not apply to become an international standard.

WiFi-enabled mobile phones can surf the Internet through WiFi and use VoIP, and the cost is much lower than the phone bill. This will reduce the income of mobile phone operators. The Ministry of Information Industry banned the listing of mobile phones with WiFi function in China in order to protect the telephone revenue of its subsidiaries, China Mobile and China Unicom.

The so-called 3G mobile phone refers to the third generation mobile phone. With the development of technology and economy, mobile phones are no longer the patent of white-collar workers. And there are many kinds and models of mobile phones. From the first generation of analog mobile phones to the second generation of digital mobile phones such as GSM and TDMA, and now to the third generation of mobile phones, mobile phones have become a new generation of mobile communication systems combining voice communication and multimedia communication, and include value-added services such as images, music, web browsing, conference calls and other information services.

Many people first came into contact with 3G mobile phones from a mobile phone advertisement of Nokia. A happy tourist wandered around a strange city with a 3G mobile phone, and the street map displayed in the mobile phone guided him to his destination smoothly. 3G mobile phones have many names. ITU calls it "IMT-2000" and European telecom giants call it "UMTS" (Universal Mobile Telecommunication System). The possible technical standards of 3G mobile phones are WCDMA, CDMA-2000, TD-SCDMA and so on. 3G mobile phone is the product of the integration of communication industry and computer industry. Compared with the previous mobile phone, the difference is too great, so more and more people begin to call this new mobile communication product "personal communication terminal". Even a layman in the communication industry can easily judge whether a mobile phone is the "third generation" from its appearance: most 3G mobile phones have large color display screens, which are often touch-controlled.

The powerful function is based on the extremely high data transmission speed of 3G mobile phones. At present, the transmission speed of GSM mobile communication network is 9.6K kilobytes per second, and the data transmission speed that the third generation mobile phone may eventually reach will be as high as 2 megabytes per second. What supports this point is that Internet technology is fully integrated into 3G mobile phone system, and the most important one is data encapsulation technology. At present, GPRS developed by using data packaging technology on the existing GSM can reach the transmission speed of 384K kilobytes per second, which is equivalent to twice the transmission speed of D-ISDN. 3G mobile phones support high-quality voice, packet data, multimedia services and multi-user rate communication, which will greatly expand the connotation of mobile phone communication.

Want to know what real 3G life is? Your glasses, watches, cosmetic boxes, sports shoes, anything you can see may become a 3G terminal. With the bandwidth and technology available, this multifunctional terminal enables us not only to communicate anytime and anywhere, but also to download and transmit data, pictures and images in both directions. Of course, we can also play online games with strangers we have never met. According to experts, in the 3G era, mobile phones can not only complete voice communication with high quality, but also carry out multimedia communication. Users can write and draw directly on the touch screen of 3G mobile phone and send it to another mobile phone, which may take less than one second. Of course, you can also send this information to the computer or download some information from the computer; Users can use 3G mobile phones to surf the Internet directly, check emails or browse the web. Many models of 3G mobile phones will have their own cameras, which will enable users to use their mobile phones for computer conferences and even make digital cameras "redundant".