Hi all, Had previously reported iPhone 5S battery issues to a local Apple Store, they didn't replace the phone and suggested I do a DFU restore, which helped a little but not much. Last Friday took my phone out, which should have been on 30%, dead. Would't even ask to be charged, just completely unresponsive. Wouldn't respond to being plugged in either. Apple replaced it on Saturday for a brand new 5S, which just now has done exactly the same thing and stopped working. Doesn't respond, even when you plug it into charge. tried different cables and adapters, no luck. Both devices were running iOS 8.3 GM. Anyone seen something like this?