The best video I've ever shot with a phone, including Pixel 2 and Galaxy S8. That is IF you got a tripod, or stable hand, if you don't then it's bad.
The 4K video I shot using my hands was perfect, looked like a DSLR video or some ****, noise was non existent and the processing was amazing for a smartphone. I filmed a ballet performance, with changing stage lights and fast movement, also it was pretty much pitch black in the concert room except the stage which was lit. My friend used his Pixel 2 to shoot 4K at the same time, and his looks like **** compared, too much noise and it just looks bad.. the Pixel 2 video looks like it came from a smartphone straight up, the Mate 10 4K looks like it came from a $700 mirrorless or something.
I have to say again, this was video shot while SITTING at a ballet performance, in this situation where you don't have to walk around, Mate 10 has the best video out of any phone I've seen. If you have to walk and move around a lot, then a very good stabilizer 4K is the best video phone, S9+ or OnePlus 6 come to mind..