Reason #1 – Install 3rd pary applications via Cydia and Installer
But even with thousands of applications available on AppStore, there are some other great applications, such as Netshare, banned by Apple to hit the Appstore for certain reasons. And this is the place where Cydia and Installer comes in and let you download all 3rd party applications. Some of the great applications you can find on Cydia are.
Reason #2 – Video Recording
Compared iPhone with any other mobile phone in the market, there is one area iPhone would definitely lose – Video Recording. With jailbreak iPhone, however, you can easily turn the iPhone camera into video camera for video recording by using Cycorder or iPhone Video Recorder.
Reason #3 – Changing iPhone Looks & Feel
Are you bored with the standard icons that come with iPhone? Ever think of changing the look of iPhone? With jailbreak iPhone, you can use Winterboard to apply theme on iPhone and make it look even cooler. Here are just a few samples to show what Winterboard can do for you:
Reason #4 – Full control of your iPhone
This may not be the reason for non-tech iPhone user. But for geeks, this may be why you need to jailbreak the iPhone. As you may know, the inner part of iPhone is a trim-down version of Mac OS X, which is actually a Unix core. So, you may wonder whether you can install some Unix applications such as Apache web server, on the iPhone. The answer is yes. With iPhone jailbreak, you can install a lightweight version of HTTP server and other similiar servers. And, one server that most Jailbreak iPhone users are using is a SSH daemon. With SSH, you can connect to iPhone remotely and transfer any file to/from it. Pretty cool, right? You can further refer to this post about how you can use SSH to transfer ringtone to the iPhone.
Reason #5 – Unlock iPhone
Lastly, the most common reason for jailbreaking iPhone is for unlock. This is one of the mandatory steps you need to through before you can unlock iPhone.