The iPhone 12 Mini is great. I will never go back to a bigger phone again. The lack of all day battery life is a feature in my opinion. I use it more like a fancy tool.
“Lack of all day battery” depends on how you use it. I have 2 day battery (about 2-3 hr screen time/day). Since I got a second sim it decreased somewhat though, negated again to a agree by setting WLAN call.