I am using iphone 6s for last 4 months and I got no complaints.The phone does not hang at all.After using for 4 months it still feels like it is a brand new phone.It is as fast as it was brand new.The best part of iphone 6s is its camera. It has the best camera.
The quality of the phone is up to the mark.There are many new hardware features in iphone 6s like we just have to long press an application and it shows all the options of that application without opening that application.Best phone to have.