Zte Z988 User Manual page 6

Power key

Press and hold to turn on or off airplane mode, power off or
restart the phone.

Press to turn off or on the screen display.
Home key

Touch to return to the home screen.

Touch and hold to open Google Search.
Back key
Touch to go to the previous screen.
Recent apps key
Touch to see recently used applications.
Volume up key
Press or hold the key to turn up the volume for media, alarm,
ringtone, or notification.
Volume down key
Press or hold the key to turn down the volume for media, alarm,
ringtone, or notification.
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