I am surprised at times at the results I can get with my current iPhone 11 Pro but it is definitely not something which I would ever want to have as my only photographic device. Once in a while I'll spot something interesting and shoot it with the iPhone, especially if I'm away from home and it's the only camera I've got handy, but even around home there are times I'll see something that catches my eye and I'll just pick up the iPhone to fire off a shot or two to see if it (the subject, the lighting, the overall situation) is worth pursuing further.... Sometimes I haven't bothered to go further, have just used the image I shot with the iPhone. Something I shot the other day which falls into that category may or may not wind up being shared in my 52-Week project, but it's early days yet.....
In the meantime I use that same iPhone to chat with friends, text with friends and family, keep up with email when I am away from a computer.....
I definitely would not be inclined to run out and buy a smartphone solely for its photographic possibilities!