I own a Nokia 3230. I feel that its getting dirty. That is dird is being accumulated in b/n the switches nd joystick. I think it can be easily cleaned by removing the cover. I want to know if Im voiding the warranty if I open it(only the case/cover). Is there any other attractive cases available for 3230 other than the red and black cases???(like that of 7610). Also dust can be seen infront of the screen but inside the case. Its really annoying.