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You can limit your data usage when abroad by turning off data roaming. You'll then not be able to access the internet using the mobile network when abroad. You can still use Wi-Fi even though data roaming is turned off.
1. Find "Connectivity"
Press the Left selection key.
2. Turn data roaming on or off
Select Data roaming to turn the function on or off.
If you turn on data roaming, press the Left selection key.
3. Return to the home screen
Press the Home key to return to the home screen.