Bingo. Plenty of existing threads with quite a bit of info. Mixing iPhone models that have different iOS versions on them and are used under different conditions doesn't add anything worthwhile, and would only create mixed information that doesn't really apply much one way or another to anything really.Unfortunately. Threads like this provide zero useful information. There are dozens if not hundreds of battery threads.
Battery life is so variable dependent that you will never have 2 devices that have the same battery life. There are literally hundreds of variables that can affect battery life.
Temperature, cellular signal strength, screen brightness, background app refresh. The list goes on and on.