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1100 nits on smartphones, Now We are Talking!
The Samsung S10 has 1100 nits, the S10 Plus 1200 nits
With these many nits (a measure of screen brightness) we should be able to view our smartphones handily in a boat cockpit on a sunny day.
Contrast that to 410 nits on a Google 3XL, which falls very far short of the 800 nits available on most MFD's, and its easy to see the S10 has taken a big leap in being usable by folks outdoors.
Still no substitute for a waterproof MFD mounted at the helm powered by a boat battery, but at least smartphones are approaching the point of being useful in a boat helm.