What is a 3G cell phone?

1, 3G cell phone is based on the third generation of digital communication technology cell phone. 3G is called 3rd Generation, relative to the first generation of analog cell phone (1G) and the second generation of GSM, TDMA and other digital cell phones (2G), the meaning of the Chinese means third-generation digital communications.

2. The first generation of digital cell phones introduced in 1995 could only make voice calls.

3. The second generation of digital cell phones, which appeared in 1996 and 1997, added the ability to receive data, such as e-mail or Web pages.

4. The main difference between the third generation and the first two is the increase in the speed of transmitting sound and data, which is capable of handling various forms of media such as images, music and video streaming, and providing a wide range of information services, including web browsing, teleconferencing and e-commerce.

5. Currently, there are three 3G standards: WCDMA, CDMA 2000, and TD-SCDMA.

(1) W-CDMA (Wideband Code Division Multiple Access) standard mainly originated in Europe and Japan's early third-generation wireless research activities, the system in the existing GSM network for use, for the system provider can be more easily transitioned to the standard's main supporters are Europe, Japan, South Korea.

(2) CDMA 2000 (Multi-Carrier Multiplexed Spread Spectrum Modulation) system is mainly proposed by the United States Qualcomm North America as the leading company, it is relatively inexpensive to build, the main supporters include Japan, South Korea, and North America and other regions and countries.

(3) TD-SCDMA (Time Division Synchronous Code Division Multiple Access) standard is proposed by China for the first time and on the basis of this Radio Transmission Technology (RTT) and international cooperation, completed the TD-SCDMA standard, becoming a member of the CDMA TDD standard.