What should I do if I can't delete the SMS?

Method 1: Some mobile phones have the option of restoring the settings in the information settings. Clicking it may be deleted, but some mobile phones do not have this function and can only do the following operations.

Method 2: Open Settings-Applications-Manage Applications-All-Information, and then click Clear Data. Most mobile phones can do this, but it's just to erase text messages. If the key problem is not solved, the information may not be deleted next time when it is full.

Method 3: You will find that the current smart phone address book has many functions and can be upgraded like other software, which involves the problem of software bugs. You can go back to the old version or try upgrading to the new version. If not, uninstall this software and don't use it. Don't worry, the communication of the mobile phone can still be used after unloading, but it is not as smart as the previous mobile phone.

Method 4: If the first three methods fail, you can only make a backup and restore the factory settings. It can basically be solved here. If not, you can look at your mobile phone.

Method 5: If it doesn't work, you can look at the mobile phone settings-about mobile phones-system updates. If there is an updated version, update it. This BUG may be fixed in the new version.

If it still doesn't work in the end, it is probably a hardware problem and can only be repaired.