Go to SMS settings

① Telecom version does not need to set SMS center number.

② SMS interface-menu key-Settings-Advanced Settings-Set SMS center number. For example, +86 1380000000

③ In the dialing interface -* # * # 4636 # * #- Mobile Information -SMSC, enter "SMS Center Number", 145.

For example, "+86 1380000000", 145.

(4) If you still can't send SMS, take off the mobile phone card, insert it into another mobile phone and set the SMS center number, and then insert the SIM card back into the mobile phone.

⑤ Whether optimization software such as power saving, optimization, assistant and forced task termination is installed, it is recommended to close or uninstall the attempt.

⑥ Try to install third-party SMS software (such as GO SMS). If the third-party software can send and receive messages normally, please clean up the SMS data (method: Settings-Programs-All-Information-Clear Data).

A more detailed description of the problem will help netizens understand your troubles and help you solve the problem more accurately. Thank you for supporting Xiaomi mobile phone!