I just ask question about small white square sticker that covered the screw and need remove to clean the dusts, I have noticed that BB Curve has issue with dusts that pass into screen, it getting more annoying.
If white sticker were removed then could void the warranty under Verizon? I don't see any word "void" on sticker or haven't get warned by rep either.
I've removed my sticker. Have opened up my BB a bunch of times. And still have been able to use the warranty.
I've never had that issue with Verizon. But yeah it does.
I think you should be fine. As long as you put your original housing back, if you one day switch it and the official OS for your phone. - if you have upgraded to others.