Hi I know there are a lot of threads like this but I was wondering if you could use a go phone sim on a iPhone 3GS on firmware 4.2.1.
1.do you have to jailbreak/unlock it?
2. Are there unlimited data plans for it?
3.how do I do it and will AT&T find out I'm using an iPhone and charge me data?
1.do you have to jailbreak/unlock it?
2. Are there unlimited data plans for it?
3.how do I do it and will AT&T find out I'm using an iPhone and charge me data?