@LJPUK I think, in theory, this makes a lot of sense. For me, at least, I'd end up wanting the 'better' iPhone regardless and I'd go back to just never carrying the other camera. I used to have a real camera and it ended up getting frustrating to have to plan the day well enough to think 'will I want to take a photo today?'. Just having something in my pocket whenever I needed it made more sense personally.
The latest smartphone is so expensive, but again only for me, it accounts for a lot of things. It's my camera, phone, SatNav, eBook reader, Notepad and organiser. It feels like I don't need it sometimes, because it's easy to forget just how integral it can be to day to day life. I also love wearing an Apple Watch so I'd never be able to get rid of that either. With limited notifications on it, it doesn't bother me with anything I don't let it.