SMS has been used for too long.

I'm sorry for the inconvenience. I suggest you try the following:

1, try setting->; More settings-> Restore factory settings-> Restore all settings "

2. Try to use "Settings->; More settings-> Restore factory settings-> Clear all data "Clear abnormal data. Note: This item will lose all data stored by users on their mobile phones, including phone books, short messages, third-party applications and related account information.

3. You can try firmware upgrade and recovery. The way is to go to official website to download the firmware upgrade package to restore the system. Address of firmware upgrade for each model:/service.html. Enter this link, click "Service"-search for your mobile phone model in the search box, then select the model, click Resource Download-firmware upgrade, and download the rom package.

This is a tutorial, you can have a look. Firmware upgrade description:/thread-1024055-1-1.html (please remember to back up your important information before upgrading).