Using your iPhone abroad is expensive, so to keep costs down make sure you have Data Roaming turned off:
Settings -> General -> Network -> Data Roaming
Furthermore, make sure that auto-checking of email is disabled:
Settings -> Mail -> Auto-Check
Finally, turn off visual voicemail before you travel:
Dial 1760 to switch the divert to voicemail off and dial 1750 to switch on the divert to voicemail.
Travelling abroad with iPhone: usage and costs
Glen Scott
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does this stop any data charges at all? cheers
Fred: If you perform these three actions, you should prevent all data charges.
are the data bundles that o2 offer any good? im travelling to spain for 4 days over christmas and am a heavy data user..
If I follow the above advice will I still be able to phone and email the family at home?
I’m currently traveling for 5 months and I figured out a way to use the maps app without incurring international data roaming charges. Before I head out for the day, I cache the maps I’ll need using a Wifi connection and then use the GPS functions of the phone to locate myself (which don’t require a data connection). I’ve posted all of the details here: http://www.howtotraveler.com/2011/03/use-the-iphone-maps-app-internationally-for-free/.