iPhone battery drain after updating to iOS 16.3

I have done these. But what is odd that right after I did the update I started having the issue with battery drain and the only thing that changed was the iOS my phone used to last almost all day now it is only about 3 hours and I am down from 100% to about 30% when I barely use the phone.

_LL wrote: "Same with Xs. (...) Battery health percentage fits to Apple recommendations..."

_LL ~ What exactly is your battery's Maximum Capacity % here?...

Settings > Battery > Battery Health & Charging

õ¿õ¬

While reading this page I watched my battery countdown like a second timer. 74% down to 66% in about 10 minutes. Yes, iPhone 8. Yes, original battery. But my battery info says this battery’s health is 76%. Now battery counter is at 64% since starting this post. I’d hate to see what 50% battery health looks like. 20 minutes from full to empty??

azar114 wrote: "...New battery..."

azar ~ Was the battery replaced by a qualified technician using a genuine iPhone battery?...

About genuine iPhone batteries

Repair Provider Verification - Official Apple Support

õ¿õ¬

Yeah like what the **** Apple? I just bought 14pro month ago and battery is draining so fast after last update. (16.3.1.) … Phone doesn’t hold energy even for whole 24 hours. And that’s really disappointing for phone worth $1550…. So do something about that, bcs this is not normal. My fiancé has 13 Pro and she’s dealing with the same issue. Until last update everything worked just fine. Now you just released some not tested piece of software and killed good phones..

I am having the same issue No Cell Coverage never showed up on my battery use now after the “Upgrade” it is the largest consumer of battery life. I have not moved and make and receive calls just as I have always done from my house. No not sure why this has changed or why it is being reported as such. I used to charge my IPhone 13 Pro Max every three to four days now it is every day.

To the folks that say turn on Airplane Mode. Really why have a phone if you cannot send and receive calls.

I noticed a dramatic change after upgrading to 16.3.something (right before 16.4). Now, my iPhone 13pro (battery - 92%) works less than 20 hours from 100% to 20%. While before the update I could use it for two days easily, longer if not actively.

I've noticed that before the update, iPhone was actively disabling any app that is not currently active. What I mean is: you are using app1, then switching to app2, app3, and then - when you return to app1 - this app shows some waiting screen for half a second or less. That is I am calling it actively disabling.

Now, it doesn't happen, which is kind of better.

But is just an observation. Because manually closing the app - doesn't help. The phone discharges at the same speed at night and with no active apps.

I waited until just recently to update hoping that bugs would be fixed. Having looked at all the posts here I see I’m not alone.

My phone is slightly older (11 pro about 3 years old) so I keep my brightness way down and make sure that other battery drainers are off.

Right after the update I noticed my battery draining super fast. Where before I could go all day and then some, now my phone goes from 100% to 17% in 3 to 4 hours!

To say it’s because of the “battery health” is a bunch of rubbish. I further call foul to the comment that it isn’t affecting more people. More likely those people don’t have the time or energy to go out of their way to comment. I know for a fact that everyone at my workplace is charging their IPhones more often (I see them plugged in).

The fact is, after the update, the batteries started draining more quickly. Whether it was from the new emojis or the pointless widgets they keep adding or what have you. To say “it’s you battery health” is not the answer.

Just please tell us what is causing the drain and what we need to remove to get it back to normal! I already found out about the health app being a drain (and it is sooooo not necessary!) are there any others you put in the update that I can remove?

So, for me, it is already a week, since the iPhone stopped eating out the battery! I am happy again))

What could fixed it?

1. some application got an update. Though I doubt it because I would see that this is some app that drains the battery. Also, on other phones with a similar setup but another version - were no problems.

2. Apple remotely fixed something, and published some quiet update?

3. I also made three cycles of full charge and full discharge (until iPhone turns off). Somewhere, I've seen this as a solution to this problem. So, maybe it was a coincidence, or, this is - what helped.

Battery drain after downloading ISO 16.3.

Same issue here with iOS 16.3. I charged my 13 pro max once in two days. Now I charge once per day. No new apps were installed. It‘s pure 16.3 issue

86% maximum capacity and nevertheless drain, with 16.3 only a bit better than 16.2

Thanks for the warning. I am still on 16.2 for 13- and hesitant to update. My phone already doesnt hold a charge all day - and I have almost all apps closed until I need to use; etc etc. What's the point in having apps if you have to shut them off; oh and not use cell data but only wifi- then the phone is useless when you can't be geo-tied to a wifi connection.

Gaslighting. This is a problem and needs to be addressed by Apple ASAP. Telling users to go out of their way to adjust settings to make their phone last through the day following Apple's update is just ... wrong. Steve Jobs would have lost his mind at the lack of user-centricity regarding this.

AppleCustomerLongTime wrote:

Therefore there is clearly an issue with IOS 16.3, battery life and the IPad Air 4th generation.

Hardly. It is not "clearly an issue" with 16.3 and my iPad Air 4th generation. Or with millions of others. If it was you would see thousands of posts about it. It is clearly an issue with your iPad. That is the only reasonable conclusion you can draw from the evidence you have. So you will have to troubleshoot it on your own.