I don't fit exactly into the parameters of your question. But in terms of switching from a larger phone (Google Pixel 3A XL) to a much smaller phone (iPhone SE 2022), it was exactly what I was looking for. It's way less clunky to use one-handed and more comfortable to carry around.

The only real downsides you might run into are the reduced screen real estate (some, but not many, apps are poorly optimized for smaller phones) and lower battery life (in general, bigger phone = bigger battery).