I had the 12 mini (before it I had an iPhone SE, then iPhone X, then the 12 mini), which unfortunately did not work for me because the battery drained too fast.
Really hope you're wrong and we do eventually get some more one-handed phones in the future, especially once battery tech evolves.
> battery drained too fast.
Battery-saver on all iOS devices.
> the battery drained too fast
I think this problem was unique to the 12 mini. I remember hearing a lot of people complain about it at the time, and I haven't experienced anything like it with my 13 mini (which I upgraded to from a six-year-old 1st-gen SE, so clearly my usage is not typical; YMMV).