Unlock Verizon to work on AT&T? Swap Model A1332 or A1387

Bob Smith

New Member
Aug 22, 2012
I currently have an AT&T 8G iPhone 4, model number A1332, and an extra Verizon 16G 4S iPhone model number A1387. I would like to be able to utilize the 16G 4S for the additional storage capacity.

1. Can I unlock this Verizon iPhone model A1387 and run it on the AT&T network. (replacing my A1332 iPhone?)
2. If so, what is the easiest way to do this? I have looked at YouTube and Google, there are literally thousands of ways. I am looking for the easiest (and cheapest way).
3. If we are able to unlock will my current SIM card work, or will I have to get a new one?

I included the model numbers because I don't know if these are GSM, CDMA, etc.

Thanks to everyone in advance.