Lock the keys and screen
Want to avoid accidentally making a call when your phone is in your pocket or bag?
Press the power key.
Unlock the keys and screen
Press the power key, and drag the lock screen up.
Tip: Instead of pressing the power key, you can also double-tap the screen if double-tap is
switched on. To switch on double-tap, tap
up phone to On.
Set the keys and screen to lock automatically
On the start screen, swipe left, tap
the length of time after which the keys and screen are locked automatically.
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Settings > touch, and switch Double tap to wake
Settings > lock screen > Screen times out after, and select