First and foremost you need to buy the iPhone Light Kit from the TheUnlockr. The Phone Light Kit is available for $29.99 and allows you to customise the iPhone’s Apple with a glowing icon, just like on the MacBook.
The hack is not for the faint hearted as it involves opening up your iPhone innards. The hack requires you to open your iPhone’s body and that alone will certainly void your Apple warranty. And if you manage to damage you iPhone in the process, you will be looking at costly repairs.