iPhone 4 (used) -> Xiaomi Mi4c (new) -> Xiaomi Mi9SE (new) -> Google Pixel 5 (used) -> Fairphone 5 (new)

I think thats my list. Got the iPhone in 2012 or 13 from a friend. Im planning to keep the Fairphone at least until 2033 (thats how long they guarantee security updates right now) so thats around 4 yrs/phone in total, more like 3yrs until now. I used every one of those pretty much until their last breath, I even opened up two of them to replace the battery.