Zte Z836BL User Manual page 137

Data Usage
Touch the Mobile data or Set cellular data limit switches to
turn on or off mobile data or mobile data limit.
You can check how much data has been used during the time
cycle you set, set mobile data limit and warning (after some
data has been used), see what apps have been using mobile
data, or restrict background data for individual apps.
NOTE:
The data usage is measured by your phone, and your carrier's
data usage accounting may differ.
Airplane Mode
Touch the Home key >
switch beside Airplane mode to turn airplane mode on or off.
All the phone's radios that transmit voice or data are turned off
when airplane mode is on.
VPN
Touch the Home key >
and connect to virtual private networks. See
Virtual Private
Default SMS App
Touch the Home key >
app to choose the preferred application for sending and
receiving messages.
> Settings > More and slide the
> Settings > More > VPN to set up
Networks.
> Settings > More > Default SMS
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Connecting to