Yes, you can do it free.
The original 2G iPhone is easiest to unlock. Software such as QuickPWN can unlock an iPhone to be used on any GSM network.
However, the 3G iPhone requires a software unlock. The baseband is updated with every iPhone update, so it takes longer to find a solution. However, it is currently possible.
You can unlock an iPhone by calling your carrier and asking them to submit a unlocking request. It can take up to seven days for the request to go through.
Well... Since it does not have a CDMA antenna, it is physically impossible to access Verizon or Sprint. You can, on the other hand, access T-Mobile's 2G network with a SIM Card, and that's all your iPhone can access anyway
You need one with a SIM Card slot. From there, find a GSM carrier, buy a SIM card and slip it in. (T-Mobile, AT&T, and every European carrier is GSM).
AT&T. But you can "unlock" an iPhone for verizon.
If it's already locked on their network - yes. If it's on another carrier's network - no.
If your iPhone is unlocked, then yes, all carriers will work. But if it is locked to a certain carrier, then you will have to unlock it using a jailbreak.
There are some organisations that can do this for you, it is very difficult to do this yourself. It depends on which carrier the iphone is locked to. There is a site that can unlock every iphone for you, they are called stockunlocks and then your problem is solved.
No.
you can simply unlock your iphone 4s now a days. visit some website which provide unlock codes. See related link. Provide them the phone and carrier details, pay the little fee and get the code.
If you unlock it by jailbreaking it will. Jailbreaking alone does not allow you to use another carrier's SIM card in the iPhone. It has to be jailbroken and then unlocked. Once you jailbreak it then Cydia will be on the device and then you go in to Cydia and run Ultrasn0w to unlock it
From iPhone 4 and beyond you can use simple software to unlock your phone. The 3GS is not able to unlock your phone unless you buy a special SIM card or take it to a different carrier
No, you cannot legally unlock an iPhone for any carrier. While that may have been true years ago US Congress passed a law saying any phone may be unlocked
A law passed in 2013 made it illegal to unlock an iPhone or any other smartphone purchased on or after January 26, 2013. You can; however, unlock your phone if you get permission from the carrier, in which case you will receive an unlock code.
You can request an unlock from the carrier that the phone is locked to. The carrier will not unlock your phone for free if you still owe them money on a contract, you should still give a try. I did some research and found this website http://www.freeunlock.us they claim to provide a free unlock for iphones as long as you share them on facebook, i also found http://www.unlockmd.com this is a paid unlock but it is the cheapest i found for AT&T iphones.