Running beta 4 on a iPhone 4, last weekend battery died and wouldn't recognize a charge. iTunes and xcode didn't see it plugged in. Went to Apple store and they replaced with a new phone, that was Sunday. Thursday night, with 65% battery I pulled it out of my pocket and found it at a black screen with the spinning circle in the middle. Won't actually boot into the software, with a hard reset it sometimes goes back to that screen and sometimes goes to the passcode screen where it is unresponsive and eventually throws back to the spinning screen.
Anybody seen or heard about this and have a suggestion as to what I might do to fix it.