I don't know how to always set the number of SMS service center, but it is a failure.

If you can't send text messages on your mobile phone, please follow these steps.

① Telecom card 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 The above cannot be set. Enter "SMS center number" -* # * # 4636 # * *- mobile phone information -SMSC in the dialing interface, such as "+86 138000000" and 145.

④ If you still can't send SMS, please remove the mobile phone card, insert it into another mobile phone and set the SMS center number, and then insert the SIM card into the mobile phone again.

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).

Thank you for your support and wish you a happy life!

Welcome to ask questions on Baidu Xiaomi Enterprise Platform: /c/xiaomi/