I can’t identi anything specific that is causing my 14 Oro Max drain. I have AOD off, 5G off, and background refresh globally off. I’m a very light user, most of the time it’s sitting unused on my desk or in my pocket. I have automations set to turn on airplane mode & enable low power mode between the hours of 11;00pm and 8;30am and the battery drain when it’s in that state seems about the same as I saw on my 13 Pro Max on iOS15. It’s the drain during the day when I’m not using it that seems to be much higher. It used to be that if I really didn’t use my phone at all all day, which quite often I don’t apart from maybe 10 minutes total use for messages, I would lose about 15% to 20% battery for the whole day whereas now I lose more like 25% to 30%. Before I liked the fact that I could go away for a weekend, even a long weekend, without needing to bother with a charger (just a cable in case of emergency) but I wouldn’t want to risk that now with my latest & definitely-not-greatest 14 Pro Max.
Given what I’m seeing with inactive drain seemingly only when not in airplane mode a network reset is definitely the next thing I’ll try. Maybe it is doing something weird and power-hungry somewhere down in the network stack. And I had really hoped that the latest Qualcomm modem which is on a smaller geometry now would give an improvement there.