I have been an Apple fan since the time I have used iPhone 3G. Following which I have owned all their models and here comes one which is their best.
Pros:
1) Retina display
2) Best finger print scanner available in market.
3) Extra lens for photography.
4) Faster processor
5) Front centered speaker
Cons:
1) I have noticed a lag in the iOS 10, having brought this selling my iPhone 6s plus. Noticed lag in both the phones and knew that its the problem of OS.
2) Price for the higher memory apples could have been a little cheaper.
Best thing about the phone is Camera.
Its the best phone camera at the moment. Period.
Please try Portrait mode, which blurs the background using the lens, and you will be surprised to know how best it functions.
There is no Heating up on this phone. Thanks to separate GPU for games.
Overall a best phone. A con being a better OS update.
I am on iOS 10.2.1 which also lags sometimes.