Had an iPhone since 08/09? Done. Not interested. Sticking with AT&T due to work discount$.
For reference, I use my phone to take pictures/video, surf web, FB, play a couple games, listen to music, check my bank account... I do have the app for my Nissan Leaf, which is clunky as hell and end up going to the web browser to check my battery charge progress. Not necessary. Only have one or two other apps I couldn't use anymore and don't really give a shit.
GO!