I was listening to Pandora, enjoying my new phone, when the music just stopped, I was unable to restart the music so I tried reinstalling the app, but it would not let me install it. "Invalid package." So I turned off my phone, and now I can not get it back on. I tried the pwr key+volume down(several times.) thing but nothing. And even more alarming the phone is getting hot and it is not plugged in or powering on.