6451 Views 2 Replies Latest reply: Dec 25, 2010 2:49 AM by Allan Sampson
As already provided, having your SIM card inserted is not required for this but if your iPhone is running iOS4 or later, you can turn Cellular Data off at Settings > General > Network. This will prevent any data or internet access via a cellular network, and Data Roaming is off by default anyway. This will not prevent you from recieving or placing calls and the same for SMS.
If you don't want to receive or place any calls, the same for SMS, and to ensure no data or internet access via a cellular network when roaming internationally without having to remove and keep the SIM card in a safe place, enable Airplane mode on your iPhone. If you want to access an available wi-fi network you can turn on wi-fi access with Airplane node enabled keeping all other radios off.
If you need or want to access a GPS app, enabling Airplane mode will not work for this, but keeping Cellular Data turned off will prevent any data or internet access via a cellular network. If you aren't running iOS4.0 or later, turning Cellular Data off alone is not possible.