Cool setting SMS center

1, check whether the SMS function is normal and whether all numbers can't send and receive SMS;

2. Please ask the operator to confirm the number of the SMS center and check whether the center number is correct;

3. Uninstall the SMS software downloaded by the mobile phone and cancel the blacklist setting;

4. Try to change the card;

5. After the data of the mobile phone is backed up, you can upgrade to the latest version through system update or restore the factory settings of the mobile phone;