Huawei P9 Lite - Manual (Page 161)

Power Management
154
Preventing background applications from
accessing the Internet
Use the networked applications manager to prevent certain applications from connecting
to the Internet and using your data allowance.
1
Open Phone Manager.
2
Touch Traffic manager > Networked apps.
3
Switch between the Installed apps and System apps tabs to configure the Internet
access permissions for individual applications. Touch to configure which
applications have Internet access while roaming.
If you disable Internet access for an application, you will be asked if you want to enable
Internet access next time you open it.
Configuring display and sound settings
Reduce power consumption by optimizing the display and sound settings on your phone.
See Configuring the display settings to learn how to save power by disabling Daydream,
turning off the indicator light, and reducing the screen brightness and screen-off time.
See Sound settings to learn how to save power by disabling unnecessary sound or
vibration alerts.