Haier W627 User Manual - page 52
Manual is about: Dual SIM Android smart phone
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Power Key
Long press To turn on / off
the phone from, and short
press to turn on / off the
screen backlight or screen
lock the phone
Ear Piece
Receive the voice
Sensors
1. Ambiance sensor, for
detecting the light or
surrounding brightness
2. Proximity sensor, used to
measure distance between
the phone and turn off the
display during a call
Front Camera
Capturing images using front
camera
Microphone
Voice receiver
Menu Key
To enter the option menu
Home Key
Short Press to return to
home screen and long press
to show the list off previous
application opened