Zte Grand X In User Manual page 7

Power Key

Press and hold to turn on or off Silent,
Vibration or Airplane mode, or to power
off your phone.

After power on, press to switch your
phone to Sleep mode.

After power on, press to wake up your
phone.
Volume Up/Down
Press or hold either end of the key to turn the
volume up or down.
Menu Key
Touch to get the options for the current
screen.
Home Key

Touch to return to the Home Screen from
any application or screen.

Touch and hold to see recently used
applications.
Back Key
Touch to go to the previous screen.
Search Key
Touch to open the Search box.
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