ICEHardware has made an article on mobile phone modding :
There are several mods that can be achieved with a little bit of work and some research, often resulting in spectacular effects and that all important uniqueness that we desire. Over the next few weeks I've got the task of taking you through these mods and explaining some of the tips and tricks along the way. So with out further a do, I bring you Phone Modding Part One, the LEDs.
Thats right, your phone is pack with light emitting diodes (LEDs) that make the LCD display and the keypad readable in low light levels. The backlight of a normal phone LCD is normally lit with bog standard green LEDs, and unless you hadn't guessed I'm going to be showing you how you can mod these LEDs for some very unique results. Unfortunately there are hundreds of makes of mobile each one manufactured in a different way. This means it is impossible for me to show you how to fit LEDs to every single type of phone on the market, but I can do my best to show you the general way in which it is done and the type of results you can expect. The phone I will be experimenting on is a Nokia 7110.