The mobile phone card suddenly lost its signal, so I couldn't make a phone call or send a text message.

If your mobile phone can't send messages and make calls, please check the following:

1, check whether the mobile phone is in arrears, and suggest paying for recharging;

2. Check whether the function or signal of the mobile phone is normal. It is recommended to change your mobile phone or location and try again.

4. If you can't use it when roaming to other places, it is recommended to check whether the local network signal is normal and whether the roaming authority is opened for this number;

5. Try to restart or replace the phone;

6. Bring your mobile phone card to Unicom's business hall for testing or replacement.

The above situation has not been solved. It is recommended to consult Unicom's manual customer service.

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