Not that much of a difference for me, but I think that’s a good thing. Everything works. Its a an iPhone.
It is smaller and lighter than the 14P, and I am using a fine woven case instead of leather. Havent taken enough pictures to judge. The 14 pro took great pictures, and this one will too.
I agree with the poster above that the battery appears to be about the same. I’ve had the phone since launch day, so that may not be enough time to make a real assessment, as I understand it may take a while for the phone to finish indexing, etc.
Action button: don’t really use it, have it set to mute and I keep my phone muted all the time anyway.
USB-C: probably the biggest difference. I like it, and am happy to have it, as my MacBook and IPad Pro also use USB-C. But i haven’t updated my airpods Pro, so I still need lighting.
I generally update my phone every year, and give my older phone to whichever of my kids has the oldest phone. I could have easily gone without the update otherwise.