IPhone 4 coming on automatically overseas
I have an American AT&T iPhone 4 that I have brought to Australia with me. Since I got here it comes on automatically. I had it turned completely off and when I took it out it was on and had a text about roaming costing $19.95. I turned it off again and next time I took it out it had once again turned on automatically without me and had the same text again. How do I stop this? And am I being charged $20 every time it is happening? I have data roaming turned off.
IPhone 4, iOS 4