There is a subreddit at Reddit.com/r/iphonemini

I was using an original IphoneSe and considered the Mini- because I like a small phone

I read some of the posts concerning battery life - the people in the sub seemed happy that the battery would last one day. I'm not

Instead I switched to Android and am using a Moto G Power - the battery on this phone is 5000 MAH and I can get two days out of the battery

I would have preferred Apple- but it's twice the price for half the battery.