This works, but ONLY for the active message thread. If you delete the thread, it defaults back to the default message tone. This is ok for customization on the fly, but it is not a replacement for the original custome message tone, that is related to the individual contact, not the message thread.
I'd much rather have it the way it used to be, and not just limied to customizing the thread, which is an ok, but minor feature, that required additional steps to actively operate.
When is his update coming? Thread notifications and custom individual message tones are not the same thing. Samsung, this should be an easy fix, what is the delay?
I take it that, now we're 16 months on from the original "we're looking into the possibility of considering an assessment of whether it's worth while investigating the need for such a feature" from Samsung, their lack of response should be interpreted as "you've already bought the phone, why should we bother putting any effort into making it work the way you like"?
You will be waiting till hell freezes over. The S10 phones were released and working on the next grouping (S11) is well on it's way. As said previously once you've got the phone and out of any money back return option, they rub their hands together and proudly announce "SUCKERS"!