how much will it cost to upgrade an iphone 3gs to an iphone 4 unlocked
So i got an iphone 3gs earlier unlocked... and i want to know what are the requirenments to upgrading to an iphone 4 or and iphone 4s... i got my 3gs off of a friend and i was wondering if i could trade it for an iphone 4 or 4s... my iphone has a cracked screen.. speaker kinda bad... please i need help... i really want an iphone 4s... Replay soon 🙂➕😮
iPhone 3GS, iOS 5.0.1