Yes, I am indeed primarily using phone and SMS for mobile communication. I have never been on Facebook or WhatsApp and generally do not like too much distraction. If I am in the mood to socialise with people, I call them, email them or suggest a joint activity, but typically from home. And as I have been working from home office (or camper-van) even pre-COVID, I am prefering my laptop for email, calendar, to-dos, Web-browsing, etc. I think this reduces the need to carry a smart phone around quite a lot, compared to many others.
What could change that would be the availability of a smartphone that turns into a PC/laptop when connected to a docking station. I suspect that Microsoft is pursuing such a plan with the integration of Android into Windows 11. Let's see ...