2.10.2 Rotating Your Mobile Phone Screen
The orientation of most screens will change to landscape or portrait view when you rotate your phone sideways.
On the Home screen, touch 
> Settings > Display >
2.11 Locking and Unlocking the Screen
2.11.1 Locking the Screen
•When your phone is on, press 
to lock the screen. When the screen is locked, you can still receive messages and calls.
•If your phone is idle for a while, the screen will lock automatically.
2.11.2 Unlocking the Screen
1.Press 
to wake up the screen.
2.Drag the lock icon from up to down to unlock the screen.
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If you have set up a screen unlock pattern, you will be prompted to draw the pattern on the screen to unlock it.
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