Got a 9 year old iPhone 6s here. Actually still perfectly usable and annoyingly fast compared to my 15 Pro. Was getting patches until July 2024 as well.
When one phone falls off the bottom of the stack another one goes on the top of the family stack. In service we have a 15 Pro, 13 Pro, 12, XR, 8 and the 6s. I'll push Pro phones down every two years now. Occasionally something needs a new battery and that's about it.
As for usability, there are a couple of problems but once you get used to it and why, meh. Safari+AdGuard (free) is excellent and a lot less dicky than Firefox on Android.
When one phone falls off the bottom of the stack another one goes on the top of the family stack. In service we have a 15 Pro, 13 Pro, 12, XR, 8 and the 6s. I'll push Pro phones down every two years now. Occasionally something needs a new battery and that's about it.
As for usability, there are a couple of problems but once you get used to it and why, meh. Safari+AdGuard (free) is excellent and a lot less dicky than Firefox on Android.