I dropped my Pre yesterday. To my surprise it didn't fall apart. So to check if there was any damage, I ran an interactive test. Everything appeared to work fine. After exitting test, all sound was so low it was hard to hear. I went to sound settings and all was at max. I did a restart and phone was back to normal. Since then I ran another test with same results! Is this a bug or is my phone jacked? If it is a bug, make sure you restart after interactive test. Because you will miss your calls and message!