I don’t think I could say, honestly. My last (and first) dumb phone was a hand-me-down from my mother c2009, and I rarely used it. It spent most of its remaining life in a drawer with its battery removed, only coming out when I was going places where other forms of communication would be scarce. I think I made maybe a dozen calls (and one seriously garbled text message) before grudgingly getting a smart device in 2011.

And yes, my Boomer mother had gone through multiple cell phone before her Millennial son got his first.