[microtonal]

Something like a Samsung A55 will also get 5 years of security updates. This line usually converges to around 300 Euros halfway the yearly product release cycle. There are cheaper Samsung models with long support periods, but last time I looked, they would only get quarterly security updates. The Pixel _a_ line usually also has pretty good pricing, but they tend to have weird issues/bugs.

(I'm an iPhone user, but just to point out that there are also more affordable options with longer support periods.)