Turn Off iPhone Screen Time If you want to keep Screen Time going but turn the notifications off, head to Settings, then Notifications, and scroll down and tap Screen Time.

This provides a backup: if you forget your Screen Time passcode, you can use your Apple ID to unlock your device or disable Screen Time. You can tap Cancel to avoid entering your Apple ID.

As it stands, no Screen Time passcode is required to delete messages. There is also no option to disable deleting messages.