I would highly NOT recommend putting a silicon case on your pearl. the sides of the phone are silver and when dirt and grime gets in there it scratches the heck out of it. just a tip
let me rephrase..if you go outside and have the possibilty to get dirt...quite a bit of it in your case, take it off first. just tryin to help. hope it does
I use a silicone case made by Blackberry and I've had no problems. The silicone does trap dirt between the case and the phone but every few weeks I take the case off and clean the phone.
I get phones from people at work that need to be worked on all the time and you would be surprised as to how dirty they get whether they use a case or not. I take them apart and anywhere there is a joint/gap there is all kinds of dirt built up. So regardless of whether you use a case or a sleeve the phone still gets dirty and grimy and scratched.