ios 13.3.1 battery drain problem

New iPhone 11 used less than 2 hours per day. Before iOS 13.3.1 would have ~85% battery remaining. After ios13.3.1 battery is about dead and it can’t tell me what drained it. Killing apps and rebooting is not helpful. I have a suspicion it’s something with Bluetooth not “disconnecting“ when I shut off head phones. Same pattern every day; drains at a constant rate and says it can’t report on what was running.

I've had my iPhone X for 2+ years and everyday I follow the same charging routine. My phone never falls below 70% in a day. I updated to 13.3.1 yesterday and today my phone was at 20% by1:30 PM! I charged it to 97% and 3 hours later it's now at 60% and it's only 6PM. It has to be this update. I want to roll-back. How do I roll back? I was one of the victims of the battery problem with Iphone 5 and made the leap to the iPhone X. I've been entirely satisfied until today. Help me roll back.

Whatever Apple did to try to preserve battery life in update 13.3.1 backfired big time. It is slowly killing it. I used to charge once a day and now I have to charge at least twice if not three time AND it now has to be on the original cord and block that came with the phone - can't even use an old one! Apple needs to fix this FAST. I am going to see if I can get rid of 13.3.1.

Dear Sir,

i am with a same problem. approximately 3% of 2691 mAh battery has been draining per hour whether i use it or not. all the battery saving tips has been applied but no update. even i kept switched off my phone over night after full charge but in the morning i find it draining the battery in the same rate.

Until the battery health drops below 80% you don't have any problems.

There is nothing wrong with your battery.

Put it on a charger while you sleep.

Dear Sir,

would you please inform me about your downgrade of your ios. has it solved the problem? i am with the same problem of serious draining.

we are not hungry for battery health percentage but usability without power support all time.

No way to roll back. The older versions of iOS are not signed by apple. So we must wait to see next update.