Didn’t work on mine...plus, why would I want to leave my Bluetooth and WiFi off?

I have the same problem on my iPhone SE (purchased new just a half a year ago). The battery easily lasted the entire day before and now after the newest update (14.4.2), I’m lucky to get half a day without having to recharge....and I’m actually using the phone less. Really wish Apple would at least acknowledge there is a problem.