Zte Optus P500 User Manual page 14

need to draw the pattern, or enter the PIN/password to unlock the phone.
Key
Power key
Home key
Back key
Recent apps
key
Volume key
Function

Press and hold to turn Flight mode On or
Off, Switch between vibration / silent / ring,
Restart the phone or Power off.

Press to turn the screen display On or Off.

Touch to return to the home screen from
any application or screen.

Touch and hold to open Google Assistant.
Touch to go to the previous screen.
Touch to see recently used apps.
Press or hold either end of the key to turn the
volume up or down.
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