Ever wonder why a lot of people are interested to jailbreak or unlock their iPhones? It is not that the unit’s original state sucks, in fact, it is perfect just the way it is. The only reason that people want their iPhone 4s unlocked? Expensive Bills and exorbitant roaming charges.

The latest addition to the iPhone’s roster of phones is, at least for the first few months after its release, still locked on to the more expensive major carriers. This means that you cannot use any other SIM cards on the unit and would end up with rather high costs on the monthly bills. But when you learn how to unlock iPhone 4s, however, you can break free from the expensive monthly bills. This process will enable you to use other SIM cards from different carriers, depending on how good the unlocking service you have obtained.

Another advantage of an unlocked unit is that, since you can use it with other carriers, it can enable the phone’s band functionalities and you will be able to insert sim card from local carriers when you need to travel overseas. This eliminates the hassle of communication issues when you travel abroad.

iPhone units also offer customizability and a myriad of applications that can be downloaded in the app market for a cost. Unlocked units, meanwhile, allow you to download these applications for free.