2. Not having a smartphone means not having your headphones on all the time when outside, and it turns out that's really nice - almost like a blessed release from the tyranny of having to constantly be entertained. You start to savour opportunities to just be: a pleasant quasi-meditative state in which you just listen to what's around you and let it stimulate idle thoughts. I also get much more reading done during my commute.
3. Not using social media very much (I am still using G+ in much reduced form) makes a massive difference to your mental health. I was not particularly depressed or anxious before, but I did use to notice that after spending a lot of time dicking around on Facebook or Twitter I would begin to feel edgy, irritable and slightly out-of-sorts - a feeling of vague disappointment with myself and the world. That's gone away.
4. I haven't missed any major news stories but I have missed a vast amount of inconsequential clickbait shite. Now if I ever do look at, for example, the BBC news website, it has a truly surreal quality - like news made up in a parallel universe by somebody trying to parody what he thinks is "news" here.
5. Sometimes you want to take a photo but can't, because you don't even have a camera anymore that isn't inside a phone. This is the main disadvantage I've discovered.
6. The second disadvantage is that writing text messages takes ages, and smartphone users have a habit of sending you streams of messages all in one go, so by the time you've finished replying to their first text they've already sent about 5 others.
7. The urge to check your phone and/or email goes away pretty quickly - within about 48 hours. As time goes on you begin to resent having to do it at all, and frequently leave the house forgetting to even take your dumbphone.