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Isn't there any version that doesn't?
It always does, at least for small groups of people.

Luckily, I am not one of them.
 
I was seeing this on my old iPad Air 2 and assumed it was just the battery finally biting the dust. It would drain something like 40% charge in an hour of PiP video streaming and multitasking.

Ended up buying a new device, so Apple got their money with this bug, I guess.
 
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Definitely seems to be an issue affecting older devices more than newer ones. I've used both a 1st Gen SE and 6S in the past week or so, both 90%+ battery health and the battery drainage was shocking. I only had Safari open, was just general browsing (no videos etc) and was losing 1% every minute. Overnight on idle with screen off I'm losing around 10-15% or more.
 
Well good. Maybe this will get them to push 14.3 out sooner and I can use the fitness+ I’ve been paying for on Apple One finally.
Or......maybe Apple can simply put out a supplemental software update. Not sure why a version change is necessary.
 
I've got a 7+ and have not experienced any battery related issues with iOS 14. I've had the keyboard lag issue though.
 
Had this issue on my iPhone 12 Pro Max over Night until I started to use my phone on airplane mode when I am home. It used to drop over 15+ % on standby without any app running in the background. Therefore it seems to be modem related in my case
 
Try a force reset (vol up/down long press power). Helps on my 12 pro max.
 
I'm impressed with the mature responses so far. By this point, we'd usually have at least a couple "It's not happening to me, so it's a made up problem" responses.

So far so good over here on 10.5" iPad Pro, iPhone X and two iPhone 8s.
 
My 11 Pro is draining very fast and my 12 mini is actually outperforming it. My 11 Pro is actually pretty lightly used because I shelved it for my SE2 for a few months and did a lot of web browsing on my Samsung. So it’s not a battery health (98%) issue. Something is going on but I’m not sure it’s related to this issue or not. I’ve had to put it in the battery case yesterday to finish my email to my friend.
 
I'm impressed with the mature responses so far. By this point, we'd usually have at least a couple "It's not happening to me, so it's a made up problem" responses.
So if someone says they're not having an issue that makes their post immature? Seriously? You're lookin at this in a very shortsighted view. Firstly it doesn't do anyone any good (other than Apple haters) to hear only negative responses or from people who are only having problems. That puts out a false message saying that the issue is widespread when often it's not. It's important that people without issues post so others with issues can narrow down the problem. I could also be certain apps that are draining the battery, or a dozen more reasons but negative-only posts are not helpful.
 
Users with older devices may wish to hold off on updating to iOS 14.2 if they have not already done so, until the issue has been fixed by Apple.
It's been out for a whole month now. Unless someone was actively avoiding it, they probably have it.
 
my original iPhone SE was killed by ios 14.2. Battery lasted less than 1 hour (it was at 84% of its lifespan ). sum this with lots BT related bugs that came ONE YEAR AGO with iOS 13 that Made Siri useless on my Apple Watch (There’s a long thread here on macrumors)... et voila: the shame is served. I HAD TO buy a new iPhone because I needed To work. But Apple has to compensate this
 
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Same issue with the iPhone 12 Pro Max: 15-20% battery drain when idle overnight. I'm on my second unit and the issue persists.
Apple support tell everyone that contacts that there's "nothing wrong".
Hopefully they'll start to listen and fix this problem.
I’m also getting 15-20% drain overnight on a 12 Pro. Was getting 4-5% overnight (On both Stable and Beta iOS releases) which I thought was a little excessive, and over the last few days it’s jumped to 15-20% overnight and nothing seems to fix this. Tried restarting, closing all apps before sleeping and not enabling sleep tracking overnight. Worth noting I am on 14.3 beta 3, but this increased battery drain started a day before I updated.
 
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