I think it's great because it has been a huge help for me. In particular, my phone is the biggest help.
It made it a lot easier for me to get around when I moved to a larger city. Also, with no internet or computer at the time, I relied on it for a lot of stuff (especially considering all my bills are electronic).
It was also a huge help for me when I moved to a tiny town that wasn't near anything. The job I was at, I only got paid once a month. And my nearest bank was a 45min drive away (and I don't drive). My phone was the only way I could deposit my cheque into my account.
But at the same time, I hate it. It's very easy for me to become addicted to it. I had gotten to the point where it was starting to negatively affect my real life relationships. Almost a year ago, I made the choice to give up the smartphone and switch to a basic flip phone. It's only in the past couple months that I decided to let myself get a smartphone again. I treat it very differently now, so that I don't make the same mistakes as last time.