Unlocking iPhone4s from contract to pay as you go?

If someone has an iPhone 4s on contract with 3, when the contract ends and the person upgrades to iPhone 5, can they then unlock the 4s and use it on pay as you go?

Yes

my wife got a gree upgrade to an iphone 4s about 4 months ago on billphone, she then gave me her iphone 4 that she had a bil contract on, i was then told to wait about 7 days when the contract is finished then bring it to the phone provider i wanted which was vodafone, they then gave me a free iphone simcard and said to connect the iphone to my pc/laptop, reinstall intunes and the apps and register n so on and it worked, now i've been using the iphone 4 on pay as you go no problems

Admin, if the phone was unlock through original carrier like AT&T, and if I update the iOS(5.0.1 to 5.1.1, would be the signal blocked again(no service)?

Yes call the service to unlock it.

  • Will out of contract Verizon iPhone4s work with foreign sim? I'm traveling to England for about two months and I would like to take a smartphone. However I have AT&T iPhone 4s and it is not out of contract therefore I can't get it unlocked and put in a SIM card from the UK. My friend has offered me her old iPhone 4s and she is with Verizon. I'm not familiar with Verizon at all so I'm not sure if I can slap a SIM card in there or if Verizon will unlock it if I call and get the codes like I could with AT&T.
  • Will buying an iphone in contract and unlocking cause contract immediate fee? If i buy a iphone for example on att contract and unlock it, will att charge me what's left on the contract or will i just go by like nothing happened and free of contract? I haven't seen this but it makes quite a bit of sense for companies… Not sure if they do however.
  • Sprint, IPhone4s. 2 year contract? I want the iPhone 4s from sprint. My mom wants to sign the 2 year contract and the people who work there said they had to check her phone credit. My mom doesn't have the best of credit, but they said "phone credit". Does that mean they'll check only her history with phones or everything?
  • New sprint iphone4s contract upgrade to iPhone 5? I needed a phone for a trip I was taking so I started an new contract intending to get an iPhone 5 but I didn't have enough money at the time, so I got the 4s. Is there anyway I can trade the 4s in for a 5 or do I have to wait for my contract to end?