Yep. Aiphor's BlueFox NX1 with 4 inch screen is roughly the same size as original iPhone, but has a larger screen (iPhone had bigger bezels and the home button underneath). To me it feels a bit too small for things like typing/texting for example.

Unihertz Jelly Star has 3 inch screen, that's way too small for me.

But they exist and so do people who buy them.