So last night my phone was on 4% and I plugged it into the factory charger. woke up 4.5 hours later, phone was completely dead. Checked charger, maybe it was unplugged? no dice. tried a different charger, nothing. got to work, another charger...nothing. did all the combos of hard/soft resets that tier 2 tech support ran me through and nothing. anyone have this happen to them?