SMS can't be deleted.

The solution that short messages on mobile phones cannot be deleted;

Note: All methods need to be backed up in advance.

Method 1. Restart the phone and try deleting it again. If not, you can restore the phone to the factory settings.

Method two. If the method 1 can't solve it, you can try to refresh the computer after backup and reinstall the system.

Method 3: uninstall the SMS software and reinstall the mobile phone ROOT.