The notification ICON... The Watch will show a red dot icon when there is a notification (email, text, etc.). At a glance, I can see that there is something I can check. With iOS, I cannot see this. If a notification comes in, it'll turn on the phone, show it, and it's gone. If I miss that, I have to turn on the phone, swipe down and review it. I had the Note 3 before and Android OS will show these, but also the type of notification (email icon for email, etc.).