Zte SPRO Quick Start Manual page 9

Projection Key
Touch to turn on or off the projector.
Power Key
Press and hold to enable silent mode or silent mode with vibration,

disable silent mode, power off or restart your Spro.
Press to turn off or on the screen display.

Power Bank Key
Press and hold to turn on or off the Power Bank feature which allows you to
charge other devices through your Spro.
Reset Key
You can use the Reset Key to restart the Spro in the event when it stops
responding or won't power off normally. Using the tip of a pen or paperclip,
press and hold the Reset Key until your Spro restarts.
Focus Wheel
Adjust the focus of the projector.
Ventilation Holes
Exhaust hot air when the projector is on.
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