A brand new iPhone SE (2022 model) drains battery overnight?
I'm having serious battery issues with an iPhone SE just one month old, though for the first two weeks everything worked as one might expect.
But now the battery gets drained even when the phone sits idle in airplane mode and it's getting worse every day. For example, having over 50% battery yesterday evening, in the morning I found the battery is almost completely drained overnight while the phone was in airplane mode (i.e. no network traffic or anything that could in my opinion explain the battery usage).
How do I fix this? I've already turned off background app refresh, and I'm using the lates iOS.
Currently I can't make it through a normal working day -- including just a few calls and perhaps listening a podcast or two -- without recharging.
iPhone SE, iOS 16