>Which manufacturers allow you to easily migrate to a new phone (Samsung has Smart Switch) and have, let's say, 4+ years of security updates?

Pixel phones get 7 years of OS and security updates. Do you consider Pixel phones to allow you to easily migrate to a new phone?

Disclosure: I work at Google, but not on Android or Pixel.

Going from a phone with a Snapdragon SoC to a Pixel with the Tensor SoC was a big downgrade for me. It gets hotter quicker when doing more demanding tasks, battery drains faster if network conditions are not perfect, etc.

We've been having some warm weather (~30ºC) around here and the other day my Pixel 8 Pro started warning me about the phone being too hot when I tried to record a video.

I like Google's Android skin and their long support periods, but Tensor holds these newer Pixels back.

Pixel phones are available in very few regions, Samsung is available virtually anywhere.

Pixel phones have been awful hardware since the 5. So there is that. The tensor chip is a dud and can't be fixed. I'm done with Samsung for good after my current phone which I bought a few months ago. I'll probably replace it with an Oppo or something again, never going back to Samsung.