3
1.1 Power button
：
Long press the Power button to turn-ondevice.
When turn on, it will take a little bit of your time to
finish some settings like language, time zone, wifi,
etc.
In any interface, press power button one second
into lock and unlock interface.
Long press the power button into a bar to choose
power off, restart, sreeenshot, or emergency.
1.2 Volume button
：
Press the volume button to adjust the volume of
playing music, radio, or video (the volume button
can adjust by the volume of the circulation).
Press the volume button into volume bar settingto
adjust the volume of media, call, Ring, Alarm.
1.3 PTT button:
There are PTT buttons on left sides of device which
is orange.
