What are the differences between 4g, 3g and 2g
With the three major network operators of China Mobile, China Unicom and China Telecom all obtaining 4G licenses, it marks the arrival of my country’s 4G network, and At present, China Mobile has launched 4G network services in many first-tier cities, which means that today’s mobile phones can already enjoy 2G, 3G and the latest 4G network services. So what are the differences between 2G, 3G and 4G networks? This is a question that many users are confused about.
At present, the vast majority of mobile phone users still use 2G and 3G networks. 4G is still in its early stages of development. Currently, if you want to experience the 4G network, you need to buy a 4G mobile phone. In addition, you need To apply for a 4G SIM card, you also need to be within a 4G network signal coverage area. Currently, only first-tier cities can experience it. To understand the differences between 2G, 3G, and 4G networks, first let’s briefly introduce 2G, 3G, and 4G networks.
The 2G network refers to the second generation wireless cellular phone communication protocol, which is represented by the digitization of wireless communications and is capable of narrowband data communications. Common 2G wireless communication protocols include GSM frequency division multiple access (GPRS, EDGE and CDMA 1X code division multiple access). The transmission speed is very slow.
The 3G network is the third generation wireless cellular phone communication protocol. It develops high-bandwidth data communication on the basis of 2G and improves the security of voice calls. The general data communication bandwidth of 3G is above 500Kb/s. Currently, there are three commonly used standards in 3G: WCDMA, CDMA2000, and TD-. SCDMA has a relatively fast transmission speed and can well meet the needs of mobile Internet access, but it is more difficult to play high-definition videos.
4G network refers to the fourth generation wireless cellular phone communication protocol, which is a combination of 3G and 3G. A technology product that integrates WLAN and can transmit high-quality video images and image transmission quality that is comparable to high-definition TV. The 4G system can download at a speed of 100Mbps, which is 2,000 times faster than dial-up Internet access, and the upload speed can also reach 20Mbps.And can meet almost all users' requirements for wireless services.
For users, the biggest difference between 2G, 3G and 4G networks is the different transmission speeds. 4G network is the latest generation Communication technology has greatly improved the transmission speed. Theoretically, the Internet speed is 50 times that of 3G, and the actual experience is about 10 times. The Internet speed can be comparable to 20M home broadband, so the 4G network can have a very smooth speed. Watch High-definition movies and big data transmission speeds are very fast, but the price is a big problem.
The following two pictures are used to help everyone easily understand the differences between 2G, 3G, and 4G networks.
Having introduced it here, I believe everyone has an understanding of the differences between 2G, 3G and 4G networks. The most essential difference between the three is the speed. Different, the latest 4G network can be comparable to 20M Broadband, you can watch high-definition movies in seconds, the speed is super fast, but the traffic will also be consumed very quickly. However, the traffic packages of 4G network will be cheaper than 3G in the future. After all, the speed is too fast and users cannot afford the loss of traffic. Lowering tariffs is a trend. In addition, in the future 2G, 3G and 4G networks will also coexist.