Originally Posted by
emma69
My worry is that I know people who have used the airplane mode, assuming as you do that will prevent the problem, and for whatever reason, whether it is when the turn the phone off, or use certain applications, data has turned back on again and they have ended up with seriously high roaming charges.
I have traveled internationally extensively with my i-Phone (both myself and my SO). We always use airplane mode and explicitly turn on Wi-Fi when needed.
We have never, ever incurred a single solitary roaming charge. Ever.
I think removing the SIM card is way overkill...
Regards