I believe the 5.4" iPhone 12 mini will be the BIG winner for Apple !
In fact, I believe many with BIGGER iPhones will Downsize to the "mini," just to try it out for a year.
Of the four, it's the most Novel, but also offers a nice upgrade/trade-in path.
5G needs another year, including at Apple, where next year's models will offer better 5G "power efficiency".
And who knows, maybe if the "mini" does really well, Apple will RE-consider their decision to NOT Report iPhone Unit Sales !
Remember, it was ONLY AFTER they had moved the iPhone product line too far UP-market, that they stopped reporting.
Ask yourself, when was the last time the least expensive new flagship iPhone was something you would consider ???
That could happen Tuesday !
It is something I am absolutely considering, Downsizing from an 11 Pro Max, for ONE year.
This ALL assumes Apple prices the "mini" appropriately, under $700 USD.