Mobile phones can't send and receive short messages, and they can't change cards to other mobile phones.

If your mobile phone can't send and receive short messages, I suggest you check the following points:

1. The mobile phone number is overdue. If you are in an abnormal state such as lock-up period/shutdown, you need to recharge before sending or receiving SMS;

2. Try sending a text message to 100 10 to see if it can be received normally;

3. Confirm whether there is a network. I suggest you use it in a place with strong signal.

4. Check whether the mailbox is full first. If it is full, please delete some information.

5. If you still can't receive it after deleting it, you can change your mobile phone or change your card for testing. If you can't receive it on other mobile phones after changing your mobile phone, it means that there is something wrong with your mobile phone card, or you can't send and receive text messages because of arrears. If it is not due to arrears or downtime, there may be something wrong with your mobile phone sim card. It is recommended that you bring your valid certificate to the local Unicom business hall for testing.

6. Check whether the number of SMS center is set correctly.

Excluding the above reasons, you can call 100 10 to check whether the SMS receiving function of this number is normally opened.