What is the reason why mobile phones can't send text messages when they are out of the province?

There is no signal on the mobile phone. Check whether the cell phone has a signal.

Reason:

1. SMS storage is full. Delete some useless messages to make room.

2. the phone bill is not enough. Call to see if you can get through (no operator).

3.SMS center number is not set or set incorrectly. Set SMS center number in SMS.

4. Restart the phone and try again. If not, please try to restore the factory settings.

Try to put the mobile phone card on another mobile phone to see if it can be used, and see if it is a problem with the mobile phone.

1. Restart the phone to see if there is a signal problem.

2. On the standby screen, click Application-Settings-More Settings-Mobile Network-Network Mode-Select GSM Only.

3. Try to replace another SIM card.

4. I suggest you call the operator's customer service number to check whether the number of this SMS center in your area is correct.

5. Check whether the mobile phone is equipped with security guards or third-party SMS software, and test it after unloading.

6. Back up mobile phone data (phone book, SMS, multimedia files, etc.). ) and restore the factory settings.