In 1990s, 2G network became popular, and mobile phones began to support making phone calls and sending text messages. It was then that China Telecom's CDMA network began to emerge.
The transformation of a small mobile phone witnessed the dream of changing life by moving.
With the advent of the 5G era, mobile phones now carry more and more functions.
In this context, the old communication technology will quit the historical stage, and CDMA networks will bid farewell to users.
As early as 20 19, an internal telecom document clearly stated that,
China Telecom will abandon CDMA network from 2020,
Because operators want to fully embrace the 5G network, new models are not allowed to use CDMA frequency bands and standards.
Obviously, China Telecom's CDMA network has reached the threshold of full withdrawal. In fact, CDMA has been eliminated in the telecom plan for a long time.
Before 4G was put into commercial use, China Telecom began to reduce its investment in CDMA network in a planned way, thus devoting all its energy to LTE.
With the all-round popularization of 4G networks and the emergence of all netcom and VoLTE smart phones, China Telecom has more confidence to bid farewell to CDMA completely, which is also the reason why CDMA networks have withdrawn from the historical stage.
Now Apple official website shows that,
The iPhone 13 series released this year does not support China Telecom's 2G/3G network, which means that China Telecom's CDMA network has become history in China.
In fact, in addition to China Telecom, Verizon, an American operator, has also stopped the service of 2GCDMA 1x network.
As the two largest CDMA network operators in the world, China Telecom and Verizon have completely abandoned CDMA networks.
The development of CDMA today is also related to Qualcomm, which popularized this technology. The formulation of 3G standard is the most beautiful moment in Qualcomm, and CDMA technology is the core of the three international general technical standards.
At that time, Qualcomm was almost in a monopoly position and had no competitors, so
In the 3G era, the price is raised through patent hegemony, which makes it impossible for terminal manufacturers and operators to bypass the expensive Qualcomm tax.
Through this technical scheme, Qualcomm earned profits far higher than those of terminal manufacturers and telecom operators, which caused great dissatisfaction in the industry, so
LTE was born in the 4G era, and its core goal is to get rid of high technology and many Qualcomm patents.
However, because the patent protection period of 2G and 3G formulated by Qualcomm is 20 years, Qualcomm can still collect patent fees from mobile phone manufacturers in the 4G era.
However, with the operators completely eliminating CDMA, it also means that Qualcomm's moderns will come to an end.
It should be noted that the current new mobile phones can no longer support telecom 2G and 3G networks, such as iPhone 13 series telecom users.
If you can't connect to 4G and 5G networks in places with poor signal, you are likely to be disconnected.
Therefore, for telecom users who plan to buy new devices such as iPhone 13, it is best to make plans before buying, so as not to affect their own use.
The best solution is to choose mobile or Unicom, because these two operators are not affected.
Friends in front of the screen, has your telecommunications network been disconnected? Welcome to comment, like, share and talk about your opinion.