Jailbreak your iPhone 4, improve its features?

Much to Apple's chagrin, jailbreaking your iPhone isn't illegal
anymore. What's more, Apple's maintained that doing so will lessen the
handset's functionality. Will it act a little different? Yes. Will it do
less? Absolutely not.













Jailbreaking your iPhone does two important things: it frees you up
to use free apps not supported by Apple, and it lets you use the phone
in ways that Apple doesn't want you to, or didn't think of first. Of
course, the flip-side here is that your iPhone is, in effect, no longer
an Apple product after you do this. You won't get any support from the
company is something goes wrong.

That said, the early benefits of the iPhone 4's jailbreaking are already becoming apparent. Using the My3G app from Cydia, a "black-market" app source, users have been able to make FaceTime calls
using 3G. Right now, the iPhone 4 can only do that over Wi-Fi. The
visual quality itself doesn't look like it gets any better, but, if you
enjoy a solid 3G connection, you should enjoy less stuttering.

It's a neat taste of things to come, but in the end jailbreaking your
phone really comes down to how curious you are to stretch its features.
The official App Store and the jailbroken alternatives tend to mirror
one another — though the latter is usually where the quirkier ideas land
first.

Additionally, as I have heard, it disqualifies your hardware for updates.