I am currently on 11.2.1 and find in very laggy. Already had to restart my Phone once today because of some weird white rectangular box that would not go away. Also, having to do more than 1 swipe (sometimes 3 or 4) just to get to home screen. I am giving it until the next update to see if performance improves, otherwise taking it back for the IPhone 8. Any others have laggy experiences and having to do multiple swipes just to get to home screen.