So... let me start by saying I'm really enjoying the phone, but...
I've been at Silverstone today, taking quite a few photo's and 4K videos and it has ripped through my battery. I came off charge around 5am and at 5pm I was on 12% with a SOT of only 2 hours 20 mins. I think it only uploaded photo's, not videos, so I'm a little surprised I got through the battery so quick.
Yesterday I did my light meter test on the screen, which I thought seemed very bright... but it barely gets 600 lumens? The last few Samsung I've tested get close to 900? But the screen does look really good? I don't really understand that. (I know I shouldn't worry if it looks good, but the result just surprises/confuses me)
Then the speakers, volume-wise are also quite low on my sound meter, but again, they sound really good. Not particularly important, again just surprised and confused me a little as I thought the Note9 would smash all my usual tests.
What I do love and have used several times already today is the S-Pen to cut bits of my screen and send them to people. Love that.