Invalid SMS function? Please follow the steps below to solve the problem.

The SMS function is invalid, don't worry! Follow these steps to find out the problem, and I believe you can solve it soon.

Check the SMS center number

Open the SMS, click the menu button, and enter the settings. In the advanced settings, check and reset the SMS center number.

Check arrears

Try to call a friend to see if the text message can't be sent because of the arrears.

Replace SIM card

Try inserting another SIM card into your phone to see if you can send SMS normally.

Clear cache and data

If none of the above methods can solve the problem, please back up the data and enter recovery mode to clear the cache, user data and all data. After the restart, the data will not be recovered temporarily, and the short message will be sent directly.