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You can deactivate data connections when roaming. Only text messages and calls are then available. This is useful if you want to avoid unintended data traffic when roaming. Follow these instructions to turn data roaming on or off.
Find "Data service"
Press Data service.
Turn data roaming on or off
Press Data roaming to turn the function on or off.
When the circle next to the menu item is marked, the function is turned on.
Press Disconnect to return to standby mode.