iOS 15.4 Battery Drain

Yea, I’ve noticed a BIG difference with my iPhone 12. Battery health is at 93%. I used to end my day with approx 50% battery left. Now I end my day with around 30%. I also am unable to use certain watch faces (series 5) as they appear to cause additional drain. Very disappointed with 15.4. I’ve also done my usual force restart, didn’t solve the issue.

Same here:

battery drain on iPhone 13 Pro Max (need to charge way more often than before - in use since Sept, phone never was below 80% // now reaches 60% without using it very often)

Same happens on iPad 12.9 M1 model.

This morning 09:30 at 100%, 12:30 45%

Just using safari for browsing and chat with customer service

Both devices “never needed charging”,

both won't last for a day in normal use after the update

:-(

Massive draining problem. I used to charge once in 2 days. Now i have to charge twice in 1 day. This is very ridiculous. Apple has acknowledged that there is a battery issue and requested to just wait 48 hours and it will be alright. But it has been 5 days and the issue still persists.

Antgann wrote: "Stop…my phone was 80-90% charged..and took a massive dump. Here are photos of my battery graph. The steep battery usage is crazy"

Antgann ~ What model of iPhone is it?...

Settings > General > About > Model Name

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

Settings > Battery > Battery Health

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Extremely unhelpful response that turns this community into a toxic place. I have had at least 8 people reach out to me in the last month after 15.4 with similar issues. All iPhone 13 devices and their Apple watches (Series 4,5,6). Something is seriously broken and 15.4.1 nor 15.5 has fixed it. I have spent weeks disabling everything I can think of with only minimal improvement. Battery life is 1/2 to 1/3rd of what it was previously.

Yes . Many 12 series users says battery life is not good

my 13 pro max is 1 month old. It could go full day of heavy usage with 50% battery. After update, close to 50% battery drain in 6 hours with light usage, youtube and messenger.

hey, have a iphone se (2020) here did the update from ios 13 to 15.4 yesterday. batterie goes from 100 to 8% in about 2h. the phone just lay here, no touching, batterie gets sucked out.

I started to think there was something wrong with my Belkin charger? But after a couple of days everything seems back to normal (many apps asked I update them …).

DutchMacFan wrote:

Nonsense!!

As quite a few mentioned already, the phone was off, doing nothing.

There is never a time when an iPhone is doing nothing, unless you mean you held the Side and Volume Up button and used the Slide to Power Off action. When the screen is locked the phone is not off; if it were you could not receive phone calls or notifications.

If you really did turn the phone off and the battery state of charge was lower when you turned it back on, then see this user tip→Check your iPhone battery for Self-Discha… - Apple Community. It means your battery is defective.

Lawrence Finch wrote:

Lee14 wrote:

Much as Apple may wish to stonewall about this, it's very clear that 15.4 broke it.

Just like it’s very clear that 15.3 and every earlier version broke it?

...

The bottom line is that it isn’t a problem with the specific version, and, if you want it resolved, you need to troubleshoot why your phone has this problem when 99+% of over 1 billion iPhones do not. 

A: Every other version has caused this problem to crop up. That's because Apple has a chronic problem it hasn't addressed.

B: Every version update gets a lot of battery drain posts, because every version leads to some hours, or a day or two, of battery drain (or apparent battery drain) issues, until a number of background tasks are completed and the new iOS version calibrates to the battery and the user's use pattern. This time it's been over a week. We're way past calibration and database updating. iOS has a runaway process problem, that doesn't show in the Battery activity charting even as it eats battery and heats up the iPhone. Apple won't allow me to run ps on the iPhone, so I can't see what it is, but I've been a Unix sysadmin long enough to recognize its footprints.

C: 1% of users may complain about it but as everyone who's ever done customer service knows, if 1 person complains at least 5 others have the same issue but haven't said anything.

D: If a bug appears in only 1% of use case scenarios, it's still a bug.

E: I'd love to troubleshoot my iPhone and find the problem (as I've had to with MacOS a few times, e.g., with their infamous distnoted runaway process in El Cap that took them about 3 version updates to fix). However, Apple won't allow apps that give users the necessary information. Hence, Apple needs to own up, step up, and fix it.

I want to applaud you for saying the truth and not simply toeing the line in order to increase your points on this forum.

While I tried to mention these points in my post about this as well, I was gaslit by those who responded with high levels and brushed off.

You make the point that I could not articulate in my post, which is not how to fix this, but rather when Apple intends to acknowledge these flaws.

At least speaking to someone at Apple in a senior role led me to learning that their team is aware of the issue and already working on a solution.

I took the issue straight to Apple Support after being gaslit by the Level 10 answer pros in this community. Despite a carefully crafted and detailed post, it was the same fashioned responses that I am sure have skyrocketed their clout here.

I spoke to Apple Support, I was escalated to a Supervisor and I eventually received a callback from Engineering because I pursued my case to the end. Engineering confirmed there were irregularities at the time but obviously could not say whether my battery was part of that or not or when an update would release.

If anything, it was the support here that I found lacking and dismissive, but these aren’t Apple employees and we must not assume they are. Still, I sympathize with your frustration on no word on the matter from Apple.

This community, when united, did get a conversation going and others who felt like they were dismissed found these posts. We should all be proud that we stood our ground and the official update confirming battery issues is vindication for me.

Yw. I bought my dad a 13 mini and he’s on 15.4.1 and it’s still at 47% smt after like almost 6 hours on screen time. I think it’s still working great on all the iPhone 13 series but not only XS-12. Heard that 6s and 7 did have a giant leap.

I realize the photo app has been doing smt in the background after the update (cause they’re rolling out a new feature called “Look Up”). I’ll closely monitor my phone for some more days and will keep u posted.

Tucch wrote: "...We really need to have folks stop asking what our battery health is because many of us have 100% on our batteries, that's not the problem...."

Tucch ~ And what about folks who have old iPhones who don't have 100% healthy batteries? ...For them, the long process of applying an iOS update to their old iPhone with a weak battery can be the proverbial "straw that broke the camel's back."

Or what about folks who've replaced their battery with a non-genuine Apple battery that now incorrectly shows 100% when the fake battery is actually failing?

...Neither of those cases have anything to do with a faulty iOS. For that reason, we'll not stop asking for the iPhone model and Maximum Capacity %. Such basic info should be stated in the first post anyway – without having to ask and then finding out it's an old iPhone 6s with only 75% Maximum Capacity!

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