My favorite mobile means iphone because I started to use my iphones version from 3GS, 4, 4S, 5, 5S and now currently I am using iphone 6 it was very good and I am waiting for iphone7, Compare to any mobile no one is equal to iphones.iphones is my best mobile in my life.Forever I will use iphone 7, 8, 9 etc.Many many thanks to ios.