Everything "just works" :) I have had the phone for a few days now and am completely satisfied. The screen is excellent for me. Good battery life.
I come closest from a Samsung galaxy S7. I have been very satisfied with the S7 until I have had it for two years. Almost during the day the battery became so bad that it became a problem. Fully charged in the morning. Very little use and the battery was down below 20% around lunch even though it was sporadically charged in the car during that time! Before that I had an Xperia. At work I have an iPhone 8 but privately 4s is the only iPhone I own.
I also got an Apple TV and it works perfectly with the iPhone.