Human society has entered the era of 4G (LTE). Second-generation mobile communication networks such as GSM and CDMA have gradually become "antique networks" and have been shut down by mobile operators in more and more countries. Recently, the US major operator T-Mobile has also joined the wave of closing CDMA networks.
T-Mobile's CDMA network is operated by its communications subsidiary MetroPCS. According to US technology media reports, there are still 500,000 users in the three major US cities still using CDMA networks and mobile phones.
Recently, MetroPCS announced on the official website that starting from June 21, the CDMA network will be gradually shut down, and the services of CDMA mobile phone users will not be guaranteed. These users need to be transferred to a GSM or LTE network.
It is reported that users of CDMA mobile phones can get the policy of replacing the old ones, returning the old mobile phones, and getting a certain vouchers, and can purchase LTE smart phones.
Among US mobile operators, T-Mobile belongs to the "GSM family" network. Since the acquisition of MetroPCS, T-Mobile has been encouraging mobile phone users to move to their own GSM network.
The most important purpose of shutting down the network and transferring users is to utilize the radio frequency resources used by the original CDMA network. T-Mobile is currently advancing the construction of base stations for 4G networks. So far, 80% of the radio frequency resources used by the original CDMA networks have been used for 4G networks.
At present, there are still many CDMA networks and mobile phone users in the United States, which are still unknown.
In the competition between the two camps of CDMA and GSM mobile communication technologies, CDMA is in a weak position. With the advent of the 3G and 4G eras, more and more countries and communication companies around the world have closed their CDMA networks.
In 2007, Australia became the first country in the world to completely shut down its CDMA network. Operators in Mexico, Japan, India, Indonesia, Vietnam, Bangladesh, Thailand, and Brazil subsequently closed CDMA network services.
In the United States, Verizon Wireless, a large operator, operates a CDMA network. According to US media reports, Verizon has also begun to shut down CDMA networks in specific regions and replace them with 4G networks. In 2013, a regional CDMA operator in the United States, "Revol Wireless," has closed its CDMA network, leading all users to join the GSM family network of Sprint, the third largest mobile communications company in the United States.
In addition to mobile cellular networks, in the global mobile phone market, CDMA mobile phones are gradually being abandoned by manufacturers, and the range of consumer choices is getting smaller and smaller, which also drives mobile phone users to switch to the GSM family network or directly upgrade to 4G.
Of course, the second-generation mobile communication network that has been eliminated by the market, in addition to CDMA, also includes the GSM network that belongs to the second generation.
AT&T, the largest mobile operator in the United States, has previously announced that it will completely shut down the GSM network in 2016, and the vacated frequency resources will be used for 4G construction.
Last year, Telstra announced that it would close the GSM network by the end of 2016. The company said that GSM phones have been discontinued for many years, while GSM networks account for less than one percent of total traffic. After shutting down, the frequency resources will also be used for 4G networks. It is reported that Telstra's 4G service has already started in 2011.
The 2G and 3G mobile networks have been gradually shut down and have become the industry trend. Recently, the UK technology market research company Ovum released a report saying that from a global perspective, second-generation networks such as GSM and CDMA still contribute a lot of revenue to mobile operators through voice calls, text messages, and roaming charges. Become a resistance to shutting down the network.
The agency predicts that 2G networks will disappear globally and may have to wait until around 2020.
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