LG H870DSU, User Manual, Page: 361 / 481

Basic Functions 41
• Proximity/Ambient light sensor
- Proximity sensor: During a call, the proximity sensor turns off the
screen and disables touch functionality when the device is in close
proximity to the human body. It turns the screen back on and enables
touch functionality when the device is outside a specific range.
- Ambient light sensor: The ambient light sensor analyses the ambient
light intensity when the auto-brightness control mode is turned on.
• Volume keys
- Adjust the volume for ringtones, calls or notifications.
- While using the Camera, gently press a Volume key to take a photo.
To take continuous photos, press and hold the Volume key.
- Press the Volume Down (-) key twice to launch the Camera app
when the screen is locked or turned off. Press the Volume Up (+) key
twice to launch .
• Power/Lock key (Fingerprint sensor)
- Briefly press the key when you want to turn the screen on or off.
- Press and hold the key when you want to select a power control
option.
- Turn on the fingerprint recognition feature to simplify the process
of unlocking the screen. See Fingerprint recognition overview for
details.
• Your device has an internal rechargeable battery. For your safety, do not
remove the embedded battery.
• Some functions may be restricted for access, depending on the device
specifications.
• On the rear of the device includes a built-in NFC antenna. Be cautious
when handling the device to avoid damaging or covering the NFC
antenna.
• Do not put heavy objects on the device or sit on it. Failure to do so may
damage the touch screen.
• Screen-protective film or accessories may interfere with the proximity
sensor.
• If your device is wet or is being used in a humid place, the touch screen
or buttons may not function properly.