As a 12 mini user daily since it came out in 2020, I've only just now started to hit any noticeable battery dip (~85% after almost 5 years usage). It's still pretty solid on a daily basis. On very rare occasions, the smaller battery has required charging before evening due to excessive photos taken and/or nav without a plug.
FWIW, I will probably replace the battery by end of year, or next, and keep it going as long as I can... I refuse the massive "normal" phone size.
thejazzman|7 months ago
That said I wish they'd release a thicker version to compensate