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Overview key
• Touch to switch between individual app activities and documents.
Home key
• From any application or screen, touch to return to the
Home screen.
Back key
• Touch to go back to the previous screen, or close a dialog
box, options menu, the notification panel, etc.
Power key
• Press: Lock the screen/Light up the screen.
• Press and hold: Show the popup menu to select from
Restart, Power off, and Aeroplane mode.
• Press and hold the Power key for at least 10 seconds to
force reboot.
• Press and hold the Power key and Volume up key under
power off mode to enter recovery mode.
• Press and hold the Power key and Volume down key to
make a screenshot.
Volume keys
• During a call, adjusts the earpiece or headset volume.
• In Music/Video/Streaming mode, adjusts the media
volume.
• In general mode, adjusts the ringtone volume.
• Mutes the ringtone of an incoming call.
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