One of the other leading operating system is iOS for iphones and other products which was made by the well known company, Apple. Of course, iOS also has the "norms" of what a typical smart phone should have. Some of the things that makes this operating system different is size, brand, accessories, etc.
As of today, more Android phone have been sold making it the most popular phone. So far, Apple has released its newest phone, the Iphone 6s. It has 3D touch, a more advanced camera, new design, and other distinguishing factors. One of the newest Android phones is the Samsung Galaxy S6 edge, which has new features such as a wireless charger, lighting depending on the contact in the phone, etc.