Other than your carrier give it for free or cheap, I don’t really see the reason why should you buy new phone. I’ve been using Redmi Note 9 for past 3 years and recently got my had on Poco F5. I don’t see the point of my ‘upgrade’. I sold it and come back to my Note 9. Gaming? Most of them are p2w or microtransaction garbage or just gimped version of its PC/Console counterpart. I mean, $400 still get you PS4, TV and Switch if you don’t mind buying used. At least here where I live. Storage? Dude, newer phone wont even let you have SD Card. Features? Well, all I see is newer phones take more features than it adds. Headphone jack, more ads, and repairability are to name a few. Battery? Just replace them. However, my Note 9 still get through day with one 80% charge in the dawn. Which takes 1 hour.
I am genuinely curious why newer phone always selling like hot cakes. Since there’s virtually no difference between 4gb of RAM and 12gb of RAM, or 12mp camera and 100mp camera on phone.
IPhone maybe? I know they restrict your battery capacity with software as your phone ages, so the short lifespan has nothing to do with the actual condition of the battery. Iirc some other brands do it to, but I don’t know which ones.
It‘s the other way around. Capacity decreases on its own just through usage. What Apple (and other manufacturers, as you said) does is decrease clock speeds of the CPU and RAM to make degraded batteries last longer. Basically trading performance for battery life. And that feature should deactivate automatically if the device senses a new battery being put in. At least it did with my old iPhone 6S.