Unfortunately a lot of hardware doesn’t fit into small phones yet. You can still get small Androids, but no NFC, wireless charging, fingerprint sensor, etc…

I’m writing this on a Samsung S10e, which is the smallest waterproof one with all the nice features I could get at the time. I can do most things one-handed, but need the one-handed mode to reach the 30% of the screen in top corner furthest away from my thumb. pic related: