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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 "mobile network"
Slide your finger left on the display.
Press mobile network.
Turn data roaming on or off
Press the field below Data roaming options.
Press roam or don't roam to turn data roaming on or off.
Press the Home key to return to standby mode.