Earlier quoted context omitted.
I update my phone now when the battery requires two full charges to 100% to last throughout the day. But there's no feature I'm looking for. My current phone is a 13 -- so I guess it lasted five years, which seems crazy long for it to be perfectly fine from a functionality perspective.
I would probably still have my iPhone 12 mini if not for what happened to its battery. Loved that form factor, but the battery went from bad to worse in just a couple of years. Hopefully these models have a longer lifespan before the battery life forces a replacement. If they truly offer 36 hours, there's more runway before they hit the < 18 hours point at which many people need a refresh
I’ll finally, albeit reluctantly, upgrade this year. I really liked the mini form factor.