Power key
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Press: Lock the screen/Light up the screen.
Press and hold: Show the pop-up menu to select from Power off/Restart/Airplane
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mode/ICE Contacts.
Press the Power key for more than 9s to restart.
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Press the Power key to mute the ringtone of an incoming call.
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Press the Power key and Volume up key to access menu of resetting the phone
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when powered off.
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Press the Power key and Volume down key to capture a screenshot.
Volume Keys
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In call mode, adjusts the earpiece or headset volume.
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In Music/Video/Streaming mode, adjusts the media volume.
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In general mode, adjusts the ringtone volume.
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Mutes the ringtone of an incoming call.
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