Why is Unicom's mobile phone going to Beijing on business, and others can't receive text messages?

The processing method that the mobile phone cannot send short messages is as follows:

1. I suggest you change your mobile phone and see if you can send and receive short messages.

2. If you can send and receive short messages, I suggest you plug the card back into your mobile phone and send yourself a short message to see if you can receive it.

3. If not, I suggest you check whether it is a sim card.

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

If it still can't be solved, you can call home 100 10 to verify whether the SMS function is normal, or bring your mobile phone card to the Unicom business hall for testing.