CipherLab RS51 Reference Manual page 125

2) Tap your mobile carrier tab page, and enable "
confirming whether you would like to enable data roaming. Tap
RESTRICT BACKGROUND DATA
1) Go to
App Drawer (All Apps)
2) Tap "
Data saver
3) If there's any applications you would like to keep them actived on background when
" " is on, tap "
Data saver
|
Settings
" and switch data saver to On, to restrict background data.
Unrestrict data access
Roaming
|
Network & Internet
" to switch them on.
125
Wireless Radios
". A dialog box appears
to confirm.
OK
|
Data usage
.