How to solve the problem that the telecommunications card cannot access the mobile network

The telecommunications card cannot access the mobile network. The solutions include network settings check, roaming settings, APN settings, SIM card problems, airplane mode and restart.

1. Network settings check

First, make sure the network settings of your phone are correct. You can go into your phone's Settings menu and select Network & Internet or a similar option, then check that mobile data is enabled and that the correct network operator is selected.

2. Roaming settings

In some cases, your mobile phone may be set to only use the network of a specific operator, which may cause the telecommunications card to be unable to be used on the mobile network . You can try looking for roaming options in your network settings and make sure it's set to allow roaming.

3. APN settings

If your mobile phone needs to manually set the APN (access point name), please make sure that you have correctly set the APN information of China Telecom. You can get this information from your telecom operator and configure it in your phone's network settings.

4. SIM card problem

Try to insert the telecommunications card into other mobile phones to check whether you can access the mobile network normally. If it cannot be accessed on other mobile phones, there may be a problem with the SIM card itself. You can contact your telecom operator for a replacement.

5. Airplane mode and restart

Try to set the phone to airplane mode and then turn off airplane mode, or try to restart the phone, which may help re-establish the connection.