Still with the stable version of iOS 14 released and running for more that 3 days battery drain is present. My iPhone 7 has all possible tricks in place to mitigate that, statistics don’t show relevant data what drain the system at all and battery get drained faster all the time. There is clear something in the OS badly implemented. There is just one more possibility and that is a reset of the phone to see, if the reconfiguring can help or just give you an feeling that you tried all, before you get that feeling that apple is not anymore what it was and probably you should think about possibe new investments in anything from them. e.g. Airpods pro have a battery drain issue as well. After they get to market 3x fw update was released, but still they has battery drai. Issue in place and they replace them just like hw is broken all the time. Ok maybe can be a bad hw as well, but I buy them two weaks ago and after 3 days of usage, the issue was present and new fw came before ios14, but did not solve that at all 🙈.