Suggest you speak to mates who have smart phones, see what they and have a play.
FWIW I hardly use my phone for calls, it's not really a phone as such it's a computer but with a small screen. Most use is email and web browsing including midweek mini movies and other online video inc BBC iPlayer, photos and listening to music. I do send a few texts inc to mates abroad using free Internet and make free/very cheap international calls via internet.
I do all of this with an iPhone on a contract with unlimited data costing about £35 month, you can do likewise on other smart phones like Samsung etc