IPhone is the brand with broadly specified feature.
System and level of iPhone never permitted to cross other brand, but not a level of comparison. because for a comparison level of product or a brand should be same which is never possible with iPhone 6S.
All incorporated Feature, Size, Shape and System is incomparable with other brand in a category of Phone.
iPhone brand takes money for product, and facility is also incomparable with any other brand.
truly, iPhone is a Step beyond the world of Technology.