Today, my wife's completely stock, unrooted, OD2, Sprint Galaxy S4 phone stopped working. It was working earlier in the day (10 minutes prior), but when she went to check the time, the screen was black and it wouldn't respond. Tried holding power button, but nothing. Battery level was at 58%. I know this because I switched her battery with mine (85%). I discovered that after a battery pull, it will show the Samsung splash screen for 2 seconds and then nothing. After pulling the battery, I tried putting it into Download mode and the Download mode screen shows for 2 seconds and then goes black. Same thing with Recovery. I have tried to let it charge, but it doesn't show the charging screen or anything. Does anyone have any ideas on: 1) What might be causing this? 2) How to fix? 3) If permanently bricked, how to get first day of school photos that are stored on phone and not on card?