I have had the same issue. Used my note 8 for about 10 minutes after taking it off of the charger. Sat it down for about 30 minutes and when I came back to use it everything was dead? I have owned it for approximately 3.5 years. If this failure is truly an time out issue programmed in as some have described it sounds like a Better Business report / class action Lawsuit is brewing. Very dissapointed in Samsung for these issues. Does not make any sense for something to just stop working without any indication. My tablet looks brand new.