Acer B1-A71 - Manual (Page 41)

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Note: Only A2DP stereo headsets (playback only, no microphone) are
supported. Please check for updates to the tablet's software which may
add support for additional Bluetooth devices.
Data Usage
The Data Usage section shows how much data has been transmitted to your
tablet, either in total or for each App. This information is useful if you are using
a metered service.
Putting your tablet in Airplane mode
You can enter Airplane mode (also known as flight mode) to turn off network
and Bluetooth functions and use your tablet during a flight. Check with your
airline to make sure this is permitted onboard.
Switch your tablet off during takeoff and landing as it may interfere with aircraft
electronic systems.
Note: When Airplane mode is active, the icon is displayed in the status
area.
To turn Airplane mode on or off, tap Settings, then under WIRELESS &
NETWORKS
tap More... > Airplane mode.
Virtual Private Network (VPN)
This option enables you to connect to a private network, such as a secure
work or office environment.
Add a VPN by tapping Settings, then under WIRELESS & NETWORKS
tap
More... > VPN > Add VPN network.
Device
Sound
Adjust the volume of your tablet using the volume buttons on the side of the
tablet. Alternatively, you can adjust your tablet sound settings by tapping
APPS
> Settings > Sound.
Item Description
Volumes Sets volume for Media, Alarm, and Notifications.
Default notification Sets a ringtone for Notifications.
Touch sounds Plays a sound whenever a screen selection is made.
Screen lock sound Plays a sound when locking and unlocking the screen.