IOS 16.1.2 battery issues

I have an iPhone 13 Pro with 91% battery health -- of which the health of the battery dropped from 98% to 91% after the ios 16.1 update. The past few weeks, my phone has been losing 8-12% an hour and running hot with it just sitting there and not much activity. Actually using it for anything that you would want to use a smartphone for drained it even faster. I have both called Apple "customer service" and visited the "Genius" bar and everything checked out and they couldn't find any issues with the battery or the ios. I explained to both that there are known threads out there describing these issues that many are experiencing, but they had no knowledge about it. Not sure what the point of these boards are if Apple doesn't actually review or assist and they leave their customers to fend for themselves. Pretty poor all around service when they won't acknowledge known issues.

Following the advice of someone else on another thread, I disabled contact sync and that seems to have solved the problem. The problems for me seemed to be around syncing the contacts to iCloud, so I turned that feature off for now. If I find the battery drain has continued, I'll update here. Hopefully, ios 16.2 fixes this issue when it is released next week and we can turn contact sync back on. There should be no reason we have to dumb down these smart phones.

I have a 12 pro max. It was recently updated to IOS 16.1.2. I have also replaced the battery using the self repair program. Also did the configuration and all the steps. My battery drains from 100% to 68% on idle overnight that too with no sim or service on the device. I have tried almost all remedies but seems it still has the problem. I will try to do another update and see if it solves the issue.

i have the same problem bro. I have an iphone13 and while my screen time is around 7-7.5 hours, it has been between 4.5-5 hours for 2 days.