There are three chronic problems that many users have reported that appear to require a firmware fix from Samsung: iris-scanner failures (with error message), fixed only by restart; similar fingerprint-sensor failures; or spontaneous restarts of the phone.
The more people who report these problems directly to Samsung, the more likely it is that Samsung will pay attention. There is a Samsung user forum that is monitored and responded to by Samsung. If you're having any of these recurring problems, please report it there:
https://us.community.samsung.com/t5/Galaxy-S8-Questions-and-Answers/bd-p/GS8QA
The more people who report these problems directly to Samsung, the more likely it is that Samsung will pay attention. There is a Samsung user forum that is monitored and responded to by Samsung. If you're having any of these recurring problems, please report it there:
https://us.community.samsung.com/t5/Galaxy-S8-Questions-and-Answers/bd-p/GS8QA
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