Only reason I own a smartphone is to fit in while working - it was like being an outsider with everyone else getting information immediately via Trello and Slack. I would often miss last minute changes to meetings and stuff.
Other than that I have no reason to own one and would love to get rid of it. I deleted all my social media accounts, I use normal taxi services and public transport, I memorize directions from my computers and so on. I don't even check my emails on the thing.