Anecdotal of course, but so far I've gone through I'd say 6-7 major Android version upgrades with no issues. Switched from Nexus 5X to Android One phones (AKA

Anecdotal of course, but so far I've gone through I'd say 6-7 major Android version upgrades with no issues. Switched from Nexus 5X to Android One phones (AKA stock Android experience, like Pixel but without its camera software), so I've gone through more major upgrades than most Android users. Next one is going to be a difficult decision, since it seems like one or two Android One phones were released in the last year or so. That doesn't make me optimistic about the Android One line, but I have close to two years before I have to worry about that.