How to make an AT&T iPhone 4 work on Verizon?

Alright, I'm about to get an iPhone 4 from AT&T to use on Verizon (I'm getting it for free from my uncle because I can't upgrade until August 2013) Do I have to jailbreak it or something like that? (It will probably have IOS 6) Thanks in advance.

Not possible, att iphones can't work on verizon.

It's not possible whatsoever.AT&T uses GSM networks a Verizon uses CDMA. They are not compatible and the iPhone 4 does not have a CDMA radio anyway if it's on AT&T.

Even if it did it wouldn't be usable and Verizon does not allow non-Verizon phones on their network. They won't activate it if the phone's ESN is in their system.

It is not possible sorry.

Where can i exchsnge a att iphine for verizon

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