Because 4G cards do not meet security requirements, you may need to replace your SIM card to use the 5G network

With the accelerated deployment of 5G networks and the emergence of more and more 5G mobile phones on the market, more consumers are beginning to choose 5G network packages. Previously, the three major operators claimed that to use 5G services, users do not need to change cards or numbers, and only need to own a 5G mobile phone.

China Telecom releases white paper (Image source: China Telecom)

However, at present, China Telecom has reversed its stance regarding the three major operators' previous policy of using 5G packages without changing cards or numbers.

On May 13, China Telecom released a white paper pointing out that at this stage, users access the 5G network through 4G cards. The existing 4G cards lack the new functions and newly added card files and services defined in the 5G standard. User identity data is transmitted in plain text during communication, and location information is not accurate enough, which can no longer meet the information and security requirements of the 5G network. And with the in-depth expansion of 5G industry applications, it cannot well respond to the requirements of various business developments, and users cannot enjoy the new experience and business services brought by the 5G network.

The white paper released by China Telecom may mean that in the future, users will need to replace their current 4G SIM cards when using 5G networks.