The mobile phone shows a signal, but it can't dial in or out? What happened? I can't receive short messages either, but I can surf the Internet.

The phone can't answer the phone normally. Reason:

1. Check whether the phone is set with functions such as call forwarding, enabling airplane mode and call barring. I suggest you cancel and try again.

2. You can check the status of the number. If it is not normal, you need to restore the normal status of the number first, and then answer the phone.

Please check whether the mobile phone is in arrears. If it has been charged, you can check the charging status.

4. Please check whether the mobile phone card is damaged or not inserted correctly. You can go to the local business hall for testing or changing your mobile phone card.

5. It is suggested that you can restart or switch flight modes and try again. If you still can't answer the phone normally, you can also change your mobile phone for testing.

If this is not the case, you can contact local manual customer service and give feedback.