Is anyone experiencing battery drain since updating their iPhone to iOS 15.4? I am considering updating this morning and have seen this be an issue with other updates in the past.
iOS 15.4.1 is out , just NOW !!!!! holy ****: tech spec say: fix for battery drain ... for god sake, APPLE !!!
Update: After 4 Days, the phone works normal again, looks like this "background tasks/jobs" are done, have the same battery stamina like with iOS 13
Hello ~ I updated my iPhone SE yesterday and all is fine. I also updated my iPhone 12 mini and no problems. Try a forced restart which I always perform after any update:
Force restart iPhone - Apple Support
~Katana-San~
if your experiencing battery issues it would be a good idea to check your battery health Check the iPhone battery health and usage – Apple Support (AU)
usaully if it is below 79 percent it needs to be looked at by a Apple or a apple authorised reseller
Danstipsandtricks wrote:
Hello and welcome to apple support
if your experiencing battery issues it would be a good idea to check your battery health Check the iPhone battery health and usage – Apple Support (AU)
usaully if it is below 79 percent it needs to be looked at by a Apple or a apple authorised reseller
Official Apple Support
90%, just as it was the day before this started happening... which was the day I updated from 15.3.1 to 15.4. Much as Apple may wish to stonewall about this, it's very clear that 15.4 broke it.
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?
Battery drain (13.2.3)
ios 13.2.3 and ios 13.3 battery issue
Re: iPhone 7 Plus with iOS 13.4 battery drain problem
Serious battery drain (14.4.2)
iPhone XR is draining battery unnecessarily after iOS 14.4.2
Battery drain (14.5.1)
Battery drain (14.6)
Battery drain (14.7)
battery (iOS 15)
Ios 15.1 battery drain and heating issue iPhone se 2020
And the most recent previous version to iOS 15.4:
battery drain (15.3)
Ios 15.3 battery draining issue
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.
I put my phone for a whole night (12h) on power cable, and did not turn it off, so that the phone was able to run with full performance for hours and on power instead of battery. now my problems are solved. the phone is back in idle modus.
Not necessarily. There are failure modes the fairly basic checks the phone makes can’t detect, but Apple’s more comprehensive diagnostic can. So make a Genius Bar appointment or click Get Support at the top of this page to have it checked.
Alancito wrote:
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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Thanks for all your help.
I think they are stating that they are experiencing regression in battery longevity.
Over the last month, I have multiple family members with mostly iPhone 13 (97%+ battery health) which are now getting 1/2 to 1/3 of their previous lifespan after 15.4. Even looking at usage, it shows only four hours or less of on screen and background time in the last 24 hours. Yet the batteries drain to zero within 8 hours.
Unfortunately Apple doesn’t provide us a way to determine what underlying subprocess is suddenly consuming extra wattage. Huge amounts of background system activity is not captured in the battery analytics. I suspect a loop in some system task, indexing process or HomeKit automation. Complete system reset isn’t a valid option for several for business reasons. It does seem to be partially tied to users with Apple Watches and something with the Bluetooth stack.
Lee14 wrote: "My iPhone SE, which had been behaving relatively well prior to 15.4,..."
Lee ~ Which SE model is it?...
iPhone SE (1st generation) released in 2016
iPhone SE (2nd generation) released in 2020
And what's the Maximum Capacity % here?...
Settings > Battery > Battery Health
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Hello and welcome to apple support
if your experiencing battery issues it would be a good idea to check your battery health Check the iPhone battery health and usage – Apple Support (AU)
usaully if it is below 79 percent it needs to be looked at by a Apple or a apple authorised reseller
tomek.richert wrote: "I have the same problem, battery drain from 80% to 20% over night, without using it"
tomek.richert ~ 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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Morarkdersz wrote: "same problem ad getting worse..."
Morarkdersz ~ 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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My iPhone SE, which had been behaving relatively well prior to 15.4, is now exhibiting the signs of a runaway process. The battery will drop precipitously, e.g., from 80% to 35% in less than an hour – while I'm not using it at all. It does so unpredictably; it'll be fine for two hours then eat its battery again. I have to charge it several times a day, when before I just charged it at night. No other changes, no new apps, haven't altered any settings, already have background app refresh turned off and all the other things Apple suggests to prolong battery life. Apple has bungled this one.
SE (1st gen), 90% battery capacity. This isn't a battery capacity issue, this is a sudden and very marked change that occurred when I updated from 15.3.1 to 15.4. Literally working fine all morning, updated at noon, and dying that afternoon. And ever since.
iOS 15.4 Battery Drain
