I can address the iPhone at least for me. I bought my first iPhone this year. The reason is because, unfortunately, Apple is the only company that pretty much p

I can address the iPhone at least for me. I bought my first iPhone this year. The reason is because, unfortunately, Apple is the only company that pretty much promises more than 3 years of security updates. I believe on Android, pixel is the best with offering 3 years of support (my last phone was a Pixel 3a). I could have stuck with android and found a phone that is fully supported by some of the more FOSS implementations of Android, but it is a pain to source a phone that has all of the drivers. This is the one place where I commend Apple, their phones average about 6-7 years of security updates and OS updates.