I brought my phone in to Sprint and had them repair it. It had dust under the screen. They told me they would try cleaning it out or replace the LCD. They had my phone for 1 hour and they changed the LCD assembly (looks like its the digitizer, LCD, and that shiny black plastic bezel around the glass.) Anyway, got the phone back and it works great and looks new. Problem I am having now is wifi. When I am around my house the wifi signal is low and drops out randomly. My question is, if they replaced the LCD assembly is there any way they could have messed with the wifi antenna or anything? Thanks!