My mobile phone cannot send text messages, what should I do?

Hello, the mobile phone cannot send text messages for the following reasons:

1: The mobile phone SMS center number is set incorrectly. Solution: Call the local China Unicom customer service center (dial 10010) Ask the manual for help and ask them to send you the Unicom SMS center number in your location. Then just set it up.

2: The mobile phone is in arrears. Solution: Recharge the mobile phone in time.

3. It is recommended that you change your mobile phone to see if you can send and receive text messages.

4. If you can send and receive text messages, it is recommended that you reinsert the card into your phone and send yourself a text message to see if you can receive it.

5. If not, it is recommended that you check whether it is a SIM card problem.

6. Bring your mobile phone card to the local business office for testing or replacement of the mobile phone card.