I regret this so much and I should think next time, but I tried to clean my usb port with automotive brake cleaner because it wasn't charging. This MELTED my home and back buttons so they don't click anymore, started to dissolve the exterior paint, and damaged some of the interior plastic parts near the usb port. I took it apart and the board looks good, just some of the plastic interior parts disfigured a little bit, hence the home and back buttons not "clicking". I rinse off the bottom part of the phone with denatured alcohol to try and get rid of any extra brake cleaner and now I have the components sitting in a plastic baggy full of rice for the night. Does anybody know if the dummy phones in stores have working buttons? I'm thinking of buying a dummy phone b/c all I need is the front housing and working buttons.