I upgraded from an Iphone 7 go an Iphone 15 PM recently and the battery life is definitely the biggest difference. I also have a 2020 SE I use at home to play certain games that my 7 can’t (due to nonstop crashing), and the biggest difference I’ve noticed between my 15 PM and the 7/SE is the substantial battery life improvement and zero latency/smooth user experience. I’ve been using this tiny little Iphone 7 for the last 7 years and it took me no more than 2-3 days to get used to the size of the Iphone 15 PM. For a phone of this size, the 15 PM is actually pretty light and has been amazing to use so far. I will admit the 7/SE is more comfortable to hold though. But it’s really not that big of a deal
Man I absolutely hated the Iphone 12 mini when it first came out. I was an Iphone 7 user for 7 years (only very recently upgraded to an Iphone 15 PM), and the size and shape of the 12 mini was insufferable to me. Not only was it tiny similar to my Iphone 7 but it has boxy sharp edges too that made the phone feel like it had little to no perks whatsoever. It’s small. It’s uncomfortable to hold. It has a tiny battery. God I hated that phone. I returned it right away lmao