I purchased an iPhone 3G from a US Apple store. I am about to travel to Spain for 6 months and don't want to spend a lot of money roaming. Is it possible to remove the AT&T SIM and buy a Movistar (iPhone carrier in Spain) SIM/package. Will the US bought iPhone3G work in Spain with a Movistar SIM? I could not definitively find the answer on the Apple, AT&T or Movistar websites. Thanks.
I note on this page http://support.apple.com/kb/HT1937 (About activating iPhone 3G with a wireless carrier) that Movistar theoretically offers authorized unlocking. Assuming it would be convenient for me to purchase an iPhone in Spain and assuming I would be able to unlock the phone, when I return to the US could I purchase an AT&T plan/SIM and install it into this unlocked iPhone? Thanks again for your help.
what if I buy an iPhone from Movistar/Spain and have it unlocked. Can I purchase an AT&T package/SIM and instal it on this open Spanish iPhone? Please look at my previous reply which further explains this comment.
If the carrier that sells an iPhone in a particular country sells the iPhone as officially unlocked, you can use the iPhone with any provider's SIM card.
The downside is with a warranty claim. If a problem develops with an iPhone that is purchased in another country, an exchange under warranty must be done in the country where the iPhone was purchased only. When returning to the U.S. with an iPhone that was purchased in another country, Apple will not exchange the iPhone in the U.S. under warranty.