There is a lot more advantages to unlocking and jailbreaking your iPhone than just lower your monthly bill. If you choose the right unlocking software you can also save money on many other features, such as wallpapers, ringtones, games and applications, in some cases obtaining them for free.

By sim unlocking your iPhone you change the firmware or programming that operates your iPhone, removing the block cellular networks place on their iPhones to prevent them from being used on other networks.