China Mobile returned the 3G network TD, which was the task when TD was built, and it was obvious when it returned. However, 2G should be retained, because one base station of 2G has the largest coverage, which can guarantee the coverage in remote areas.
Unicom returned to 2G because its 3G technology UMTS is the best and the user experience is the best. At the same time, the investment of 4G5G has not moved much, and the coverage is insufficient. It is most cost-effective for him to keep 3G and 2G.
Telecom is also returning to 3G, and the technology is CDMA2000. This technology is safe, but the network speed is slow, and most of the patents of CDMA2000 are in Qualcomm's hands. So being returned is also an inevitable choice.
3G is enough to open the webpage, but watching videos is a little hard, and watching HD live broadcasts is not good either. It is not suitable for ordinary users' daily use, but it does not mean that there are no application scenarios at all.
There are many devices in the Internet of Things that use very little traffic, ranging from a few meters to dozens of meters a month, and it is not measured by whether you can open a webpage.
4G and 5G are fast, but the coverage of a base station is very small, which is not suitable for remote areas. In addition, there are many users who don't need to use a lot of data, just make a phone call.
At present, all the 3G networks in China should be dismantled, but it is impossible to dismantle the E network.
Because E-net is an important support of 2G network, don't think it is not important just because we don't use E-net of 2G network to browse web pages now.
In fact, many IOT devices are still interconnected by using 2G e network, and these IOT devices based on 2G network interconnection will not be replaced for a long time.
Although the signal transmitted by the 2G network is not large, the coverage of the 2G network is the best.
So she will not be replaced for a long time. Moreover, according to the current forecast, 2G network is irreplaceable for 3G network, 4G cannot cover 2G network, and 5G network will not cover 2G network.
Therefore, if we want to build a nationwide wireless communication network without dead ends in a country like China, the 2G network will exist for a long time, and the network based on the 2G network will also exist for a long time.
Dismantling costs, not maintenance. There are fewer and fewer people. If you are not satisfied, upgrade to 4G or 5G. Anyway, operators still uphold the responsibility of central enterprises and improve the 2g, 2.5G and 3g networks.
Unicom's 3G can open a webpage and brush Tik Tok.