My Sprint S8 died this evening! I wasn't charging it or anything. I picked it up a couple of hours after getting home from work and it was dead can't reboot or anything! Just a black screen. HELP?!?
Hey! The reset worked!! Thanks! I wonder what happened to cause it to do that?!? Thanks again!
Wouldn't adb restart work as well? I'd rather try that before a full reset.
One reason to prefer the replaceable battery. Lots of glitches cured with the temporary removable of battery.
Try and see if a soft reset helps. Hold the power button and the volume-down button for about 7-10 seconds. Let go of the buttons once you feel the device vibrates. It should reboot and I hope that it fixes it, if nothing try once more just in case you didn't do it right the first time.
Worst case scenario put it to charge and let it overnight, just in case is a battery glitch.
That happened to my phone about a month ago and my wife's phone a week or two after getting it. We did the same thing to get it running again. It was sounds like a common thing with the S8. I don't remember this happening with past phones.