When i click the + - buttons on the side nothing shows up on the screen. Also, when i try to listen to music, the slider thing for the volume doesn't show up, its just a blank space. My alarms and calls work fine but when someone texts me it doesn't make a sound. When i plug in my headphones it used to go on and off but now it seems to be working perfectly. I had my phone plugged into a music speaker thing earlier before. I don't have my phone on silent and I've tried turning it off and on. Also before when i used to click the volume buttons on the side, the ringer icon would show up but the little squares belowthat show you how loud it is weren't there, now it just doesn't show up.