Ok so here is a new one that I can't get an answer to anywhere else.. yesterday I put my phone in airplane mode and was listening to music. after less than an hour of music and changing tracks, i did notice that the lower nav buttons stayed illuminated after I pressed the sleep button. Here is where the real problem has started. When putting the phone back into normal phone mode, my phone stopped responding normally. I cannot wake the phone up. when plugged into the wall, I can get it to slowly respond somewhat to a screen that says "process system not responding". but still no worky worky! please help I love my phone and really dont wanna get a certified like new.