I have been using I phone( 6s-64G) for two year. apple done well. They provide a high quality camera, 3D touch and live photos. 3D touch is a genuine innovation. The design of the phone is also great. speaker on the 6s work good not the loudest but its ok for me. I checked both I phone 7 and 6s here the price difference was like about 13000 thousand indian rupee and I didnot find any difference except for water resistance. Now I am running Ios 11.25 beta and its very stable. one of the major feature of the 6s is camera. apple gave a 12 MP sensor camera on the back and 5 MP selfie camera. I phone 6s also uses the phones screen as a front flash for selfie shot in low light condition. so I like I phone 6s.