Huawei's mobile phone often displays the short messages of the last few days.

Hello ~ this situation can be turned off by itself in the settings.

Apple:

1. Turn on the phone settings-notification-information-turn off the lock screen display, so that your SMS reminder will not be displayed when the phone is locked.

Android system:

1 1. Open the phone settings-notification and status bar-notification management-information-turn off the lock screen display, so that your SMS reminder will not be displayed when the phone is locked. Different settings of mobile phones will be a little different, but they are all the same.