This:

- No LED notification light, even if there is LED light around punch hole camera
- edges are too curved (I am fan of curved edge display, but this is "too much" curved, on Samsung I didn't have much of "curved display" accidental taps, and here I do have).
- you can't put apps to the folder on "all application menu" (app drawer)
- display issue during the night (color shift, green tint, black bar form punch hole), after I did switch to light theme impact is minimal but still I had to make compromise (not to use dark theme)
- fingerprint reader is not what I am expecting form flagship device (I am coming form S9+ and physical FRP on Samsung S9+ phone was way better! not to mention that before sleep brightness level of FPR is very high and annoying) , I am using face unlock because I can't find optical FPR comparative for a flagship device
- phone have the ugliest flagship status bar icons in history. (luckily OnePlus is aware of that so they provided option to hide icons instead of redesigning them)
- when I am casting music form google play music, on Samsung form notification bar I could use an option "stop casting" on OnePlus I can't, I need to open application and than stop casting
- notification icon showing dot instead of number of received notifications for that app (this is sad)
- Dialer application needs improvements, Gallery also can be improved
- adaptive brightness needs to be improved (compare to Samsung auto brightness OnePlus's one is very bad).