What's the matter with the new calling card caller ID wireless device turned off?

Restart the phone (so that the phone can search and register again).

Under the standby desktop-click Application-Settings-More-Mobile Network-Network Operator-Search Network-Select the network operator supported by your SIM card.

Wipe the contact point between the mobile phone card and the mobile phone (whether the sim card is in poor contact).

Try to replace the sim card (whether the SIM card is aged or damaged).

You shut down the network manually in the network settings to see if you can find China Mobile and China Mobile. This is a small problem. Is the radio frequency circuit can receive, can transmit. Please go to the maintenance staff to help you deal with it, and explain whether you can receive it and launch it.

Try calling another contact, or change the SIM card.

Back up mobile phone data (phone book, SMS information, multimedia materials, etc.). ), restore the factory settings of the mobile phone, and eliminate the faults caused by the software).