Can i unlock my iphone 4 in contract?

Just bought it online through ATT. Latest updates on it. Wanting to unlock say f the contract n go to diff carrier with it.

Http://attiphoneunlocker.com/

We can unlock any iPhone, from the first generation, the iPhone 3G, 3GS, 4 and the 4S. Our unique unlock supports All bootloaders, basebands, and firmwares as we do not unlock using software, we unlock using Apple's IMEI database.

It can be unlocked only via factory unlocked. Most iphone 4 models are either baseband 4.11 or 4.12, which can be only factory unlocked. You can use gevey sim to unlock this if it is 4.10 and lower.

  • Can you unlock an iPhone 5 even though it's on contract? I bought an iPhone 5 from a friend and I'm pretty sure it is not stolen but it's still in contract. I have a different carrier, would it alright if I unlocked it?
  • Can I unlock my iphone in the middle of my contract? I have an extra iPhone 4S that I want to give to my friend to use. But her network is tmobile so I need to get it unlocked. I want to get it factory unlocked but I'm in the middle of a contract with AT&T. Is it possible to use an online unlock service (such as global unlocks) even though I'm still on contract?
  • Can I unlock an iPhone 5 that is still in a 2 year contract? So I'm going to be studying abroad next year and want to bring my iPhone 5, but I can't use it unless it's unlocked. So if my 2 year AT&T contract is still active with the iPhone 5, can I still unlock it? I've read many forums that many people have, but I can't be sure.
  • Can I switch a Verizon Contract Iphone 5 (no longer in contract) to the Verizon Prepaid service? I now have T-Mobile, but I wanted to give my 17 year old sister my old phone. Contracts are way to expensive for her, and I saw Verizon prepaid cards at Walmart. I know that there are limited options with Verizon (Which is why I left them). She has the phone with her, so I don't have any way of looking to see if it does or not. If someone has been able to do this that would be fantastic to know! No sarcasm!