Switching iPhone 2G to a new account
I lost my AT&T iPhone 3GS last week, and as a replacement borrowed my friend's old 2G (also on AT&T).
I took it to an official AT&T store and they tried activating it with brand new SIM card, but they got the following error in iTunes:
The SIM card inserted in this iPhone does not appear to be supported.
Only compatible SIM cards from a supported carrier may be used to active the iPhone.
Please insert the SIM card that came with your iPhone or visit a supported Carrier's store to receive a replacement SIM card.
I was able to restore my 3GS back-up on the 2G phone, but only when using the old SIM card. The phone shows up in iTunes with my friend's phone number. When trying a new SIM card, I get the above error both at the AT&T and on my iMac at home.
I'm not sure if the phone is unlocked. Here are my questions:
- Does the phone need to be unlocked?
- Does my friend have to be at the store to unlock it, or can I ask them to do it?
- Can I unlock it myself with jailbreak software?
- Will unlocking it myself cause problems at the AT&T store?