Turning the screen lock on my mobile phone on or off
If you want to avoid accidental key taps, you can lock the phone keys and display.
Choose one of the following options: Turn screen lock on or off, go to 1a. Select setting for automatic screen lock, go to 1b.
To turn on the screen lock: Tap the status bar at the top of the display twice in quick succession. To turn off the screen lock: Tap twice anywhere on the display. Slide your finger across the display.
Slide your finger down the display starting from the top edge of your mobile phone. Tap the settings icon.