To do this involves taking your handset apart and soldering a small PCB, therefore there is no doubt that doing this will invalidate your warranty. This mod won’t mimic the Xperia U, whose LED light changes colours depending on the screen content, but it does look pretty cool regardless.
PS – For the record this is not an April Foos prank, although we can see why it may look like one!
Via Timberland @ HardwareZone.com.sg.
See some more of Timberland’s work here.