How To lock iPhone Screen.

Step 1. – Go to settings – Click on the Notifications

Step 2. Click on the app whose notification you want to disable from the lock screen notifications

Step 3. – Tap on the lock screen icon – The blue check badge will disappear

Step 4. Click on the notification grouping & then Clixk on By app, on or off icon as per your choice about grouping the message on lock screen

For Last Step Click Below