How much would it cost to upgrade a iPhone 3GS to anything newer?

I've had my iPhone 3GS for about a year now and I want to upgrade to a 4, 4s, or even a 5 how much would it cost? I have AT&T with a 2 year contract, and this phone was free. Would it be a better idea to go to apple or AT&T?

Go to AT&T and get a good quality Android phone that will do more than the iphone 5.It will cast you quite a bit less than the prices that Apple over charges for their mind control devices.

You'll have to go to at&t at some point. How much you pay will depend on what phone you get.

  • How much would the iPhone 6 cost if I just bought it without upgrading or anything? I've been thinking of buying a new phone and getting rid of my 4 year old one that's pretty much broken. My brother told me to go to the apple store and just buy the iphone 6 and it would just cost $199. But then my friend told me that it would be a lot more expensive since I can't really upgrade. But I just wanna know how much it would actually cost without upgrading.
  • How much would the iPhone 5 cost with an upgrade from Verizon? I'm getting an upgrade in December and I know the 16 GB iPhone is $199, but wouldn't it be cheaper with an upgrade? I would just need an estimation.
  • How much would it cost to upgrade to an iPhone 5 on Sprint? I JUST got the iPhone 4 a few days ago (sunday and today is thursday). But, the iPhone 5 has just been released for preorder.So, how much would it cost to trade in the phone for the 5 (by the way, when i got the 4, it was on a new 2year contract).
  • How much would it cost to upgrade my iPhone? I currently have an iPhone 3GS from at&t. I have had my contract since december of 2011, and I'm pretty sure the contract ends December of 2013. I want to upgrade my 3GS to an iPhone 5 when it releases, but was wondering how much that would cost(estimation). Do you think there would be some type of deal on the iPhone 5 for people who want to upgrade? I've never upgraded a phone before so I don't know how this works.