The iphone 6s which is a one year old smartphone is still one of the fastest devices out there in the market.even a year later.The build quality is extremely premium with the 7000series aluminium body and the phone has a faster a9 cpu which when compared to the new a10 cpu has a slight difference in power which is barely noticeble.The phone is extremely snappy and fluid with a blazing fast fingerprint scanner and along with that it also has some features like the 3d touch the new 12mp camera which is awesome and similar battery life like the last generation.Overall a great phone but is still expensive.and you can go for it if you cannot afford the iphone 7.it’s a great buy.But some facts like single sim .and no storage expansion does bother me a bit