It’s going to be interesting to see how Apple do their magical marketing for the ‘new’ USB C port on the iPhone 15, when it’s literally been standard on android devices the last 5 years or so.
I am not upgrading [may happen in 2025 or later] but waiting for the official Apple announcement of changes/upgrades compared to iPhone 14 series and older... Thinking of buying a pre-owned iPhone 12 Pro Max to experience iOS 17 since I am going to stay on iOS 16 on my iPhone 14 Pro Max...
I have a belief that the best version is the one that the iPhone was designed with...
Although iOS 9 on iPhone 4S [slow performance/response] may no longer happen, I still see some people [on websites like this] [and YouTube] they are encountering issues and bugs after upgrading to a major version... Like the iPhone 13 series upgraded to iOS 16...
As for the iPhone 12 Pro Max, I have read that iOS 17 fully supports A14 Bionic and newer but limited support on A12 Bionic and A13 Bionic...