If I got the iPhone 4 from someone and just switch SIM cards will AT&T or Apple know?
I have the iPhone 3GS and I don't want to upgrade it to the iPhone 4 for $399. If I got the iPhone 4 from someone and just switch SIM cards will AT&T or Apple know?
I have the iPhone 3GS and I don't want to upgrade it to the iPhone 4 for $399. If I got the iPhone 4 from someone and just switch SIM cards will AT&T or Apple know?