Lock The Keys And Screen - Nokia Lumia 920 User Manual

To make an emergency call during the initial set-up, tap emergency call.

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.
Set the keys and screen to lock automatically
On the start screen, swipe left, tap Settings > lock screen > Screen times out after, and select the
length of time after which the keys and screen are locked automatically.
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