Bezels have the opposite effect to what you are purporting. The most difficult to reach places on the iPhone 6 are the bezels. A 6 inch phone is not one-handable imo. That is coming from someone with larger than average hands.
I can't say enough good things about them - for $2 they transform even the largest phones to being one-handable. It's miraculous. They make this conversation obsolete without the slightest exaggeration. They systematically prevent fragile holds and - they're cool,
iPhone 12 Mini is 5.4” and a touch larger than I want. Everyone who sees it says they love the size and wish they had one.
The ZenTouch button on this looks great - main complaint with my Mini is not being able access Notification Center easily one handed. Unfortunately it looks to be right hand operable only…
The battery in the mini iPhone is just 2200mah. that's like half the size of the Asus battery. Do you want to charge your phone twice a day just because you want a small one? A Powerbank is not small but you need that if you want to spend a day with such a small phone.
We both know mah isn't all that matters, software and system architecture are arguably more important. FWIW I probably charge my 12 mini less than once per day (not even overnight).
Yes I use a powerbank on multiday backcountry trips, but it stays in my pack, not on my person and especially not in my hand.
I have an iPhone 12 mini. Battery is no issue for someone whose use case doesn’t involve gaming or loads of video. And if you’re doing significant amounts of either of those I pity you, especially on a 5.4 inch screen.