Jailbreak and Unlock iphone 3G 16G
Well, I have been looking around these days for solution to upgrade my iphone to3.1.2, I feel this is the right forum to ask. I have to admit when it comes to Jailbreaking and unlocking Iphone, I no ideas at all.
Iphone 3g, 16Gb
Modem Firmware 02.11.07
Whether it was jailedbreak before, i have no idea since my bro gave it to me. I notice my iphone has a small plastic chip underneath the sim card. And notice some other iphone doesn't come with that. I presume my iphone is not yet unlocked, right?
Then I am concerned about my contact. How do i back-up before jailbreak and unlock, any program or using itune? Because those contacts are valuable to me.
I'm living outside of US.
Thank you very much.