1 Turn on the screen lock
Briefly press On/Off.
2 Turn off the screen lock
Briefly press On/Off and slide you finger upwards on the screen.
3 Set automatic screen lock
Slide your finger downwards starting from the top of the screen.
Press ALL SETTINGS.
Press lock screen.
Press the field below "Screen times out after".
Press the required setting.
4 Return to the home screen
Press the Home key to return to the home screen.