It happened a few days ago, my phone suddenly became heated (while sitting on the couch in air conditioning) and the battery drained quickly, I put it into the charger but it drained faster than charged, when it got to about 20-30% I turned the phone off to cool down. Ever since I couldn't turn it back on! I tried resetting with holding hold+volume down, up, both, none, everything! It doesn't show a thing when it's connected to the wall, when I connect it via USB to PC it shows a white light on the side but nothing else happens, and the computer doesn't recognize it. Anyone? I really don't know what to do. And it's not a contract phone, there's no company I can return it to.