I tried the Samsung S9 for about a month. I’m sending it back and pre-ordered the iPhone XR.
I’m not a tech guy but the impression I get is that IOS handles memory much better, with Samsung there is a lag on all apps after about a day of normal usage. You have to remember to close all apps and reboot, whereas with IOS you don’t have to worry about that, in the main.
It’s a shame, I really wanted to like Android (and save myself a ton of money).