Also could be: Web browsing. Facetime. Looking at photos. Notes. Reminders. Calendar/agenda. Being able to look at the local weather. Seeing what a few stocks are doing. Add only a dozen or so well chosen apps, and you're probably at the limit of what the majority of people really find utility in -- in common. Everything else is going to be for specific niches, or the result of marketing to people stuff they don't need.