The one big deal with iPhones or any popular mobile cell phone is the fact that the sim card of one network remains in use anywhere in the world the phones are taken. For example if the iPhone sim card is derived from one carrier brand then the network usage of the particular iPhone is done through the payment arrangements of that carrier alone. Unlocking an iPhone would allow for using sim cards from other carriers in other places of the world without the complexity of restriction to one single network and its arrangements with other networks. This process of unlocking iPhones would be against the law in most cases and should only be attempted with care. The AT&T network sim card comes with the Apple iPhone on a contract basis. Breaking out of this would require a user to hack into the workings of this device and unlock the phone for use with other network sim cards that are usually not recommended for use with this device.
The first such hack which has been recorded was in the hands of a teenager who disassembled the device and performed tweakings on the hardware and software of the device to achieve an unlocked iPhone. The methods used by this teenager proved to be very complex for other users with a fast lifestyle to even think aside of. The massive requirement of equipment and other resources like lengthy periods of concentrated effort make the unlocking of an iPhone to be the most unappealing thing to do.
Myuch of the unlocking today is done by much more convenient methods of software applications. Whatever you do with your iPhone gadget expecting to achieve an unlocked phone with flexibility of network usage, do be aware of all the junk you could be left with in case the mission were to fail. Many people around the world have failed in there attempts and ended up with destroyed phones. Even tweaking the software could result in the gadget turning dysfunctional. Any firmware upgrade that may be available for download could only be more secure than the previous versions to prevent unauthorized access to unlocked iPhones.
There are many touting scam artists out there who might recommend a tweak to you but most of these come with as huge a price tag as the iPhone itself. Think before you tweak this device. Neither do you want to end up with a dysfunctional device nor do you want to feel guilty of unauthorized manipulation. The web is full of apparent methods for a full unlock of your iPhone device which are usually the worst methods resulting in a broken device both to touch and feel as well as operate. Updates to the newer iPhones would only make it more difficult to hack into the functions and unlock. The one advantage of leaving the iPhone as it is would be the fact that it is already available with a perfect economical package on contract with AT&T. If in future the device comes with compatibility among other networks and sim card interchangeability then a lot of folks would be truly happy.