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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 "Data roaming"
Press the Navigation key.
Select Mobile data.
Select Data roaming.
2. Turn data roaming on or off
Select On to turn on the function.
Select Off to turn off the function.
3. Return to the home screen
Press Disconnect to return to the home screen.