Few days back, Apple was granted “slide to unlock” feature patent and Apple iPhone users simply cannot use this feature as Apple does not wants its user to enjoy so much customization. Fortunately, we have an extremely talented jailbreak community that lets you enjoy Android 4.0, also known as, ICS (ice cream sandwich) unlock feature. The jailbreak tweak is called Androidlock and it lets you customize the lock screen of jailbroken iPhone.
After you have installed it, just download the theme and apply it and in no time, you will be enjoying ICS unlock feature on your iPhone. To install it, search for androidlock. It costs 1.50 dollars and is worth every penny. The theme is, however, free. To get the theme, search for androidlock xt. Oh, and make sure to keep the patten in mind as you would not be able to unlock your iPhone if you forget it.
Also check out - How to send SMS by WiFi on iPhone.