Battery drain since iOS 15.6 is ridiculous

You seem to be in low power mode, and what’s probably happening is the photos app is waiting for you to turn off low power mode so it can finish updating its database. Turn off low power mode, connect the phone to power for a few hours.

rwps wrote: "Yes original battery, but the phone was replaced with new under warranty, just before the 2yr warranty expired - so the phone is a couple of years newer. Battery capacity is 81% - it still works very well (except since the update :)..."

rwps ~ So how many years has this battery been used?

81% max capacity is weak and probably explains the symptoms.

Also, the long process of applying an iOS update to an old iPhone 6s Plus with a weak battery can be the proverbial "straw that broke the camel's back." Users then mistakenly blame the update instead of the weak battery. So have the battery replaced and all will (probably) be well:

iPhone Battery & Power Repair

About genuine iPhone batteries

Repair Provider Verification

(Articles found by searching Apple's Knowledge Base.)

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What app is using the most energy? After an update some apps (photos, especially) reindex their databases; this can take a day or two because it is a background process. So you can’t really get an accurate measure of battery usage for a couple of days after updating. You should also try restarting your phone any time battery drain is unusually high.

Werner ex HTC wrote:

Lawrence, I reported the issue to Apple. The advice they gave me was the same I got with IOS 14.x battery issue a year ago. Apple made a copy of the Log from my IOS 15.6 installation. Then I have to install a clean/new iOS 15.6 version (no update from 15.5 to 15.6) and then I had to restore from my ICloud Backup. ODU everything with the result, that the battery drain still is remaining 😳😢

Install a clean/new iOS 15.6 AND DON’T INSTALL ANYTHING AT ALL. No apps, no mail accounts, don’t enable iCloud sync. Charge the phone to 100%. Use the phone for a day. Does the battery drain still happen? If it does you have a hardware problem. If it doesn’t one or more of your apps are causing the problem.

turn off "Limit IP Address Tracking", it made some difference for me.

It isn’t an end user problem, but it IS an app problem. The phone uses almost no energy on its own; if there were absolutely no apps running on it and it was locked the battery would last almost a week. Other than periodically registering with the cellular network all energy use is by apps that are doing background updates, iCloud or other cloud function syncing or processing notifications, email, text downloads, etc. So you need to fix it by identifying the apps that are using that energy. A good first step is to restart the phone; this kills all apps on the phone and forces them to restart, so any that are “stuck” will start fresh.

Lawrence, I reported the issue to Apple. The advice they gave me was the same I got with IOS 14.x battery issue a year ago. Apple made a copy of the Log from my IOS 15.6 installation. Then I have to install a clean/new iOS 15.6 version (no update from 15.5 to 15.6) and then I had to restore from my ICloud Backup. ODU everything with the result, that the battery drain still is remaining 😳😢

same Battery drain issue is still on 4 other devices at my family , where we updated from IOS 15.5 to 15.6. IPad Pro, 2x IPhone 12 an on my IPhone 11pro.

As I said, i did a clean install on my IPhone 11 Pro and my IpdaPro. still the same issue, so I didn’t waste my time to do the same procedure on the IPhone 12 as well. Still waiting for IOS 15.6.1 to get this topic fixed.

No, there is no ploy to force customers to buy new phones. It sounds as if you may have optimized battery charging enabled.

See here:

About Optimized Battery Charging on your iPhone - Apple Support

Also:

When to charge your iPhone or iPad - Apple Community

Please watch iApplebytes 15.6 video and see the results yourself. I baby my Xs Max and now just over two and a half years old. I followed 40-80% charging practice since day one and battery health is at 96% right now after upgrading to 15.6. (I lost further 2% upgrading from 15.5 in a matter of two months. ??) I stayed on 14.8.1 until 15.5 was released. I’m not a heavy user and I know my Xs max doesn’t have the best battery life comparing to latest pro maxes but I’ve been using the same apps for years few hours in the evenings while my iPad is charging. I always keep all background apps off at all times including mail fetch and find my. I've noticed on 15.5 my cellular signal constantly changing between one to 4-5 bars, this is all day and night. And still behaving the same on 15.6 perhaps because there was no new modem update. I have nothing to say about the performance of 15.5 or the .6 and no battery drain over night but soon as start using my phone, battery counts down like a timer clock, 2% every 15min or so and Im not talking about indexing for few days because of upgrading or so, issue still continues a month later (on 15.5) and now 15.6 and this is really noticeable. My brand new iPad Air was on 15.3 when I purchased it and since 15.5, behaves exactly the same so it’s not only my iPhone. You also yourself don’t say what phone you have, perhaps the newest devices are not much effected because of their battery capabilities. I don’t know but please watch some latest performance comparison videos yourself and you can see what I’m trying to say here. With every new update, it seems to ruin my devices battery life. You may agree or not.

I am having a similar problem with excess battery drainage on two iPhone 12 pro maxes, an iPad Pro, and an iPad Pro second generation. I am using AT&T in St. Louis, Missouri. My problem started after installing iOS 15.6.1 and updating my apps. I am getting as much as 3.5 GB per day of "Settings > Cellular> System Services> Push Notifications", and my (otherwise healthy) battery requires unusually frequent recharging. I turned off all app Notifications (except Phone and Messages), and all background app refresh. Also, at Apple Support's suggestion, in Privacy>Location Services>System Services, I turned off several location related System Services (such as Location Based Alerts). This has not worked to stop the Push Notification data hemorrhage. Phone calls to Apple Support on 8/21/22 and 8/22/22 also failed to solve the problem. So far, the only way to stop the Push Notifications is to turn off Cellular Data, which defeats the main purpose of having a mobile smart phone. Even after stopping Cellular Data, I have noticed unusually rapid battery depletion if Wi-Fi is turned on. Please check your Push Notifications. If that is your problem, perhaps Apple Support will be able to help you.

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

Settings > General > About > Model Name

Does it still have its original battery?

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

Settings > Battery > Battery Health

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To help save battery life, Turn off Background App Refresh.

Go to Settings/General/Background App Refresh

RS6DS3CS1 wrote: "XS Max. Battery life was great until ios 15.6."

What's the Maximum Capacity % here?...

Settings > Battery > Battery Health

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ios 15.6 drain alot of battery like ios 15.5 or other previous versions on my 12 pro max. may be its a second last update of ios 15 but they didn't fix battery drain issue on 12 series or on older device. they take whole year to fix issues and here it comes battery drain, they only focus on latest new models only. apples optimisation in battery life worst.

gian152 wrote: "...Apple tech kindly do something about it. Hope you release the fix so soon."

Although Apple administers these communities, that doesn't include reading each of thousands of daily posts for possible feedback. However, Apple will "read all feedback carefully" here:

iPhone Feedback

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