iPhone battery drain after updating to iOS 16.3

Check your mail app, mines burning up my battery in the background - working with engineers now - if thru think I’m hanging around waiting for a software update then they are mistaken. I’m going to ask them to uninstall the new patch I GUARANTEE everything will be fine. I wonder if they will offer me any compensation for three weeks of significant inconvenience.

sibeso257 wrote: "It’s happening to me too.am using iPhone x"

sibeso ~ Does your iPhone X still have its original battery?

And what's the Maximum Capacity % here?...

Settings > Battery > Battery Health & Charging

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sibeso257 wrote: "Yes it still has its original battery and capacity is at 99%...."

sibeso ~ 99% is unexpectedly high for an iPhone X original battery...

Did you buy your iPhone X new or used or refurbished?

How many years ago did you buy it?

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I thought it was me but yes unbelievable battery drain. I can see the battery going down by the minute it loses one percentage all the time. Thought it was my phone and battery but it’s still ok. Unbelievable they force us to take an update and take away battery use

iPhone 12. I’ve tried all the tricks mentioned and gotten minimal improvement. There’s some kind of drain related to the latest IOS update. It’s a fairly regular occurrence with updates but there’s usually a fix quite quickly after the update but not this time.

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.

Also, I was on a trip to another city. And discharging suddenly stopped! The battary usage graph became an almost horizontal line, especially at night, as it should be. But then I returned home and the battery usage graph returned to a usual diagonal falling.

I don't know what caused this, because I tried to turn off Wi-Fi and didn't help.

jorghen wrote: "...on a trip to another city. And discharging suddenly stopped! (...) I tried to turn off Wi-Fi and didn't help."

Try turning off Location Services:

Settings > Privacy & Security > Location Services

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The exact same thing has happened to mine. My phone went from charging it every 2 days to having to charge it 3 times a days, as soon as I completed the last update. Did you take it into apple to try to resolve this? I heard apple does this through an update, so you are forced to upgrade your phone. It’s pretty ****.

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?

CSMcBaine wrote: "...My phone is slightly older (11 pro about 3 years old)..."

3 years is typically how long a battery will last before needing replacement – so what's the Maximum Capacity % here?...

Settings > Battery > Battery Health & Charging

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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.

So just because YOU say so I shouldn’t believe my eyes, my experience, nor anyone else’s? Do better than that dude! New phone here, battery was just fine till the latest upgrade. Don’t bother responding.

I tried everything, including reinstalling other firmware versions. I am not even saying about uninstalling apps, tuning settings, etc.

I am tired of all your obvious pieces of advice.

It would be very easy to rule out this update from causes if... I just could make a rollback to a previous version! But I cannot. Because Apple closes the ability to provide some signing process for previous versions. And that's it. The key problem - with this. We CANNOT rule out the update from the causes.

Nothing in phone settings fixes the issue my phone was fine until the stupid update now it dies within a few hours versus days so no it’s not settings it’s the update and it needs to be fixed my phone is only a year old and has been fine up until now!!!!!!