Uno Premier - Functions of Icons

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you can press this key to lock screen;
if you press and hold this key, a
phone-options dialog would pop out.
Here, you can select to power off,
reboot, screenshot and emergency.
◆ Volume key
Volume key situates at the right side
of the phone. You can press it to
adjust ringer volume.
2.3 Functions of icons
◆ Menu icon
Touch this icon to access options of a
selected function;
◆ Home icon