With the gradual popularization of 5G networks in China, many mainland Chinese users have already switched to 5G mobile phones. According to a report by the Chinese media “The Paper”, recently users reported on the Internet that they had previously purchased a Mi 9 Pro 5G mobile phone. Using the 5G network, China Telecom’s customer service said: Only the latest 5G mobile phone can be replaced.
According to the Chinese media “The Paper”, Mr. Wang from Sichuan stated that he bought a Mi 9 Pro 5G mobile phone with more than 4,000 yuan under active lobbying by China Telecom staff six months ago, but recently the new mobile phone always cannot receive 5G signals. , Can only use 4G network. In this regard, China Telecom’s customer service said that Sichuan Telecom’s 5G network base station has been upgraded from the previous NSA mode to a SA mode 5G base station. Mobile phone users in NSA 5G mode such as Xiaomi 9 Pro 5G, if they want to continue to use the 5G network, only To be able to replace the latest 5G mobile phone, Mr. Wang pointed out that he has not received relevant news since the purchase of the phone. He said, “Isn’t this cheating consumers?”
The Mi 9 Pro 5G mobile phone was released in the second half of 2019. It is equipped with Qualcomm Snapdragon 855+ chip. Through the external X50 baseband chip, it only supports 5G NSA networking mode networks. Sichuan Telecom upgraded the SA networking mode. Afterwards, he could no longer receive 5G signals, and Mr. Wang also had nowhere to complain.
The construction of 5G network is divided into NSA and SA networking modes. In the early stage of 5G network construction, after the NSA networking is directly upgraded on the 4G base station, it can become a 5G network with lower construction costs. However, the SA group that became popular later Network mode requires the establishment of another 5G base station, which is costly, but the transmission speed of its 5G network is faster, which is the main development direction in the current 5G market.
Huawei’s consumer business CEO Yu Chengdong once said that 5G mobile phones must support both NSA and SA dual networking modes in order to have a better 5G experience.
source : Surging news
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