Is anyone experiencing battery drain since updating to iOS 15.2? If so, any tips for what to do about it? I just updated this morning. Thanks!
iPhone 12 Pro Max
As posted in the 15.1 battery drain thread, some of the fixes that I found might help with 15.2 as well. I'm talking about drain that persists for more than the 1-3 days after an update while Spotlight is indexing. I had my iPhone 13 Pro Max and iPad Mini 6 BOTH draining enough to run dry in 20 hours of standby, and fixed it completely, so I'm still on 15.1 with no issues..
1) Turn off Apple News Widget on your Home Screen if you have it configured. I had seen that Apple News was using a lot of battery in "Settings > Battery" and I wasn't using it. Turning off background app refresh made no difference in battery use and drain in the background. Then I discovered the widget hiding on the screen to the left of the Home Screen that has my app icons, and turned it off. That reduced my drain from 5-7% per hour to only 3-5% per hour. I also turned off most of the other widgets except Calendar, Reminders, and Battery level for bluetooth accessories (watch, and AirPods).
2) I had my iPhone 13 Pro Max and iPad Mini 6 paired with my iMac and MacBook 16", and had "show this iPad/iPhone when connected with WiFi" turned on. I "Reset Network Settings" which broke this pairing, and COMPLETELY solved my battery drain issue. I was later able to plug my devices back into my iMac and pair/Trust them, but I made sure to turn OFF "show this iPad/iPhone when connected with WiFi" when I Trusted them, and the drain has not come back.
Apparently the WiFi network connection between iDevice and Macintosh computer maybe has the iDevice phoning home continuously in 15.1, even when you are not on the home, and this system resource is still draining the battery regardless of low power mode or not. But my best guess is that when the iDevice is NOT looking out for the computer constantly, with "show this device on wifi", then the drain goes away completely FOR ME. This might not be your problem.
I have an IPhone 12 mini and the battery health is at 91%. Keeping that in mind after IOS 15.2 the battery is draining faster than usual. Standby time is alright but watching youtube decreases battery at an exponential rate
I'ts already fixed - so glad not facing battery drain anymore (after a few days of playing with various settings). I cannot write more details for obvious reasons.
good luck for new year and new releases :)
I'm in Europe and I have iPhone 12 mini only half a years old. After upgraded my phone to 15.2 my battery can only last 5 to 7 hours and before it can take almost the the whole day. I had many iPhone before but this is becoming a big problem of Apple every time they upgrading a new software and prostrating for what I bought specially for the expensive price.
I hope they can solve this fast. Because I think I'm starting loosing my longer interest with apple products.
It's not possible to report a bug. Apple allows selecting version 15.1 (and older) of iOS. Quite strange.
Apple usually accepts bug reports only for stable releases. Does it mean Apple doesn't treat 15.2 as stable version? I couldn't agree more, taking into account such terrible bugs like this discussed here.
jackv3 wrote: "It's not possible to report a bug. Apple allows selecting version 15.1 (and older) of iOS. Quite strange...."
Yes, it is strange. So I just sent feedback about their iPhone Feedback page via this Website Feedback page(!)...
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I have never heard of AirTags till today. And I just checked, I have none in FindMy app. Even if their existence may affect something, they are probably not the real issue in this particular case with 15.2, as even without them the battery drain is still terrible.
Apple remove my comments from this board when I had mentioned that there was something ’’odd’ going on so in order to avoid my comments coming off again all I will say is this is a battery issue which I believe has been pre-programmed and no one of us can find a fix for it. Apart from Apple. I don’t believe that wiping your phone off resetting it is going to do anything. All I can say is that most people had excellent battery on 14 and it didn’t seem to be in the best interest for apple that those benefits were to continue into 15.
jackv3 wrote:
This 2-3 days "stabilization" time is just useful "story" for complaining customers. I thing it's another prove that this just an unintentional bug which affects users randomly.
Yep, I have the same feeling. As most of the resources they (and some folks in this forum) are typically referring to regarding battery issues. If you buy a phone, you just expect it to work, and you shouldn't really think or care about adjusting screen brightness, background refresh, know about indexing and battery optimization, etc. – the stuff which actually doesn't help much in fact based on my multi-year experience with iPhones.
I agree that it's just poor quality control on Apple's side that doesn't capture critical bugs in new releases. They seem to use us, regular users, as they actual QA in the field.
I purchased and paid infull one year ago my Pro max 11 iOS 15.2 and have had no problems with till know-not only the update promblem my warranty expired. Phone freezes battles running down fast. Very disappointed. Fix the problem or lose a customer.
I suppose everybody’s got a variety of different issues; mine is almost definitely a pre-timed battery drain. I know two other people who are experiencing almost exactly the same thing. It appears if you do a iOS 15.2 search on Google and if you see the latest press it all points towards battery drain. I am rather surprised Apple have not even addressed this.
Ios 15.2 is a killer on my battery! My IPhone 12 pro is constantly going flat. Its real obvious. Im constantly charging and the battery is just draining at insane rates?? Wtf Apple? Im really at my last bit of patience with apple at this stage
I won’t be posting here anymore because Apple are constantly removing messages that they don’t like. This is not constructive. If the developers don’t even check this board and we have to go elsewhere to put in a recommendation I don’t even know why they have these forms. It’s just a front. Probably better to take your issues to editors of different magazines
jackv3 wrote: "faizal73 reported problem with draining battery after upgrade, not after battery replacement..."
jackv3 ~ faizal73 has both situations: a draining nongenuine battery after a device software update, exactly as Apple warns: "Using nongenuine batteries might also result in unexpected behavior after installation, device software updates, or while charging. Using nongenuine batteries might also lead to safety issues." Source:
About genuine iPhone batteries
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Technically you're right. But "device software updates" warning concerns such situation as, e.g. blocking non- genuine batteries (that haven't happened yet contrary to some non-MFi cables which were made usless after upgrade to 13.2.1 as far as I remember), lack of some reports (like battery health - this already happened) or loss of warranty (fortunately not allowed in EU where I live).
What are the chances that software upgrade will initiate non-genuine battery drain? Close to zero. So yes - I would follow your advice should such replacement be costless. But it isn't. Far from it. Apple charges tons of money for battery replacement. Spending a lot of money with perspective of fast battery degradation (due to bug) ... well, doesn't seem to be great idea.
One way or another - it's fizal73's decision.
One more argument against replacing battery as a way to solve the problem is that there are lots of people who have quite new phones (like me - 3-months-old 12 mini) which suffer from this bug as well. What are the chances that we have non-genuine batteries? Apple quality control is sort of best in class.
iOS 15.2 Battery Drain
