Telecom card can make phone calls, but there is no network. Why?

If the telecom card can make calls but there is no network, it may be caused by the following reasons:

1.APN setting error: Please make sure the APN (access point name) of the mobile phone is set correctly. You can find the network settings or mobile network options in the settings of your mobile phone to check whether the APN settings are correct, including APN name, APN type, agent, etc.

2. Poor signal coverage: Please check the signal coverage of the current position. If you are in an area with weak or no signal, there may be no network connection.

3.SIM card failure: Sometimes, the SIM card may fail or be damaged, which makes it impossible to connect to the network. You can try to insert a SIM card into another mobile phone, or insert another SIM card into the current mobile phone to eliminate the possibility of SIM card failure.

4. Operator's network failure: Sometimes, the telecom operator's network may fail or be under maintenance, which makes it impossible to connect to the network normally. You can try to use the telecom card at another time or place to determine whether it is a network problem of the operator.

If the above methods can't solve the problem, it is suggested to contact the customer service of telecom operators, explain the situation and provide relevant identity information, and they may provide further help and solutions.

In short, if the telecom card can make calls but there is no network, you can try to check APN settings, signal coverage, SIM card failure or contact the operator's customer service to solve the problem.