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11.20 How do I cancel the screen unlock password?
Go to Settings > All > Screen lock & passwords > Password. Cancel the password for
unlocking.
11.21 How do I delete unnecessary home screens?
Pinch two fingers together to switch to the home screen management panel and then touch
on the empty home screen to delete it.
11.21.1 What can I do if the screen stays on when my phone is
charging?
Perform the following:
1. Go to Settings and touch About phone.
2. Touch the build number several times in rapid succession until a message is displayed to
indicate that you have entered developer mode.
3. Return to the Settings screen, touch Developer options, and deselect Stay awake.