In my experience it takes will power initially, but after I reached
escape velocity I no longer needed much will power.
I'm talking about the day that I decided to "mute' my life. This was back in 2014 (I can't believe it's already been that long). Set my phone so that texts no longer caused alert sounds or vibration, only calls from those in my contacts would ring through, and I deleted crap like Facebook (and didn't log in again for over a year).
It took conscious effort initially, but then you adjust quicker than you think after you realize that exactly 0% of texts you will ever receive actually need your immediate attention. Maybe you the reader get important texts all the time, and I sort of feel sorry if you do, but I never ever do. If someone ever actually needs to reach me they will call, and they are never some rando number not in my contacts.
These devices and the services surrounding them don't necessarily deserve all the negative credit we attribute to them. People get addicted to things not just because those things have addicting qualities but because those people's needs aren't getting met in other areas. Technology makes it really easy to tickle those addiction centers in our brains, if you will, so that's the most common way to cope for people whom are missing something. It's not a personal failing (most of the time anyway) because even knowing that you are addicted, or that there's more to addiction than the surface level, is actually a really hard thing.
The other side of the equation is that not being addicted can be isolating in modern society. In my own life I sometimes have a hard time socializing with others, not out of shyness or anything like that, but because most people don't know how to relate to me when they find out that I don't surf social media, binge watch entertainment, or play video games for hours on end. They say "so what do you do with all that free time?" When I tell them that I am spending nearly all that time building things and learning, unless I'm among serious nerds, they don't get how my lifestyle is fulfilling to me. Truth be told, not living vicariously through the imaginary lives of others doesn't have to be boring.
I think there's a few kinds of people; the kind who don't get fulfillment or enjoyment outside of entertainment, and the kind who can be self-fulfilled but also deep down realize that it would separate them from much of society, which can be a scary thing. It might not be a conscious thought, but I think it's probably there.