ChrisMac47
macrumors 6502
Such a device unfortunately is probably not physically possible with current technologies.
Apple Watch get you partly there with cellular models, but they're limited and not yet a phone replacement IMHO.
All that said, I personally have no particular issue with my 16pro's size.
Yes, it's a challenge to make an iPod touch sized iPhone but surely possible with present technology. Engineers love challenges, not orders to make some incremental advance on last year's model. Come on Apple, show some spirit!