It is my matric for determining how useful the phone is to a person. sales people will tell a grand mother to buy a S7 so they can earn more commission but the grandm will never need a S7 and will probably break the screen within a couple weeks. I don't understand why people draw others into the android ecosystem only to leave them stranded to fend for themselves. And even buying music from apple is a ecosystem trap - you have to keep buying iphones forever or you lose all your ****.