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iOS 15 Home app and HomeKit have excessive battery drain

After upgrading to iOS 15, I noticed excessive battery usage caused by the Home app. In the battery usage in settings, it says “accessories” under the home app activity.


I see similar behavior on iPhones and my iPad.


In terms of my HomeKit setup, I have several Phillips hue lights, a Kwikset lock, a temp/humidity sensor and 4 cameras configured as HomeKit secure video. I also have an Apple TV HD that serves as my HomeKit hub.


I am not sure what’s causing this battery usage as it didn’t exist in ios14. I am also not sure how to isolate the guilty accessory.


One theory is to blame on device processing for all the cameras such as activity detection. Not sure if that happens in the hub or in the devices.


iPhone 13 Pro Max

Posted on Oct 10, 2021 5:46 AM

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Question marked as Best reply

Posted on Feb 12, 2022 7:12 AM

Hey all - let me try to summarize my thoughts on the issue based upon these replies, some research, and digging into Wi-Fi networks.


A few quick notes: this doesn’t appear to be caused by specific HomeKit devices or bridges. There’s no theme to whether you have a Lutron or Hue or other bridge. The issue persists. Additionally, adjusting settings in the Home app or iPhone/iPad doesn’t resolve the issue. I’ve tried every permutation of setting including deleting my entire Home and factory resetting my iPad, and the issue still persists.


Root cause: it seems like the root cause is due to Apple’s implementation of Thread. I’ve noticed that if I am either off Wi-Fi or on a different Wi-Fi network than my HomePod devices that the issue does NOT occur.


Digging into my Wi-Fi logs via Pi-hole (and looking at several other threads on this topic), my iPhone and iPad are constantly sending out requests to HomePodName.openthread.thread.home.arpa.


This is occurring thousands of times a day and I’m guessing it’s impacting battery life.


I contacted the Thread group and they confirmed this is not the expected behavior.


As such, we’ll have to wait for a fix to the HomePod and/or Apple TV to resolve this problem.


Note- the scenario I described above will impact anyone with a HomePod mini or Apple TV 4K (latest gen).

Similar questions

150 replies

Feb 18, 2022 8:00 AM in response to ktrap

So, lost almost 50% battery last night as Home shows about 22 minutes of background usage every hour.


Decided to double check that it was not set as a Home hub and...this is interesting. I flipped on the switch to see what it would do and there's a message that I "currently do not have any homes". Not true of course, and in fact I can use the Home app from the iPad just fine.


Anyone else having this battery issue see this?


Feb 19, 2022 4:17 AM in response to ktrap

I have the same issues on an iPad 9.7, an iPhone 13 and an iPhone SE (current version)

I own an homeport mini, Apple TV and only other connected bridge is velux active.

Today, there was a drop in battery of 82% within 2,5 hours on the iPhone 13. It was pretty warm, so there is sth strange happening.


it was in flight mode until 6:20, then the drain of battery started. While working out of my home, there is no issue. is related to wifi. Are all the others on UI (Unifi) products? Maybe there is a relation....?

I can confirm the [HomePodName].openthread.thread.home.arpa connections, there are a lot of...

Ipad not the home hub, this is my appleTV. disabled location things.

Oct 12, 2021 7:40 AM in response to bailier

Last 10 days it used 22% percent.


I am on iOS 15. Most of the notifications are from camera activities and cameras changing state (turning off when someone comes home).


I’ll turn off all HomeKit notifications and see if that changes.


I had the same HomeKit notifications under ios 14 and the battery usage was negligible.


Thanks

Oct 14, 2021 8:49 AM in response to Jeff_W.

Hi,


I have the same issue on my iPad Air 4. Sometimes I have backgournd activity from Home app and sometimes not....

I have a Hue bridge, an Aqara Hub and a Homekit Secure Video camera. I don't receive any notifications on my iPad so I don't know why I have this usage. Leave my iPad alone !


I loose between 5 and 10% per day without doing anything while my wife's iPad which is not admin but resident of the Home loose only 2 or 3% per day.


What causes this ?


Suggestion for Apple: it would be good to have a on option to turn off automatically the Wifi after no use of iPad and enables it when open the iPad....

Nov 5, 2021 6:21 AM in response to Jeff_W.

I have the same issue and since I haven't changed the level of notifications since updating to ios 15 then 15.1 my Homekit now uses 39 to 44% battery usage indicating Accessories. Several of them required updates and are off line, so either it is an issue with notifications in general or how 3rd party apps tell Homekit their accessory needs an update is a possibility.

Jan 1, 2022 4:18 PM in response to ktrap

I am also seeing this same issue - iPad Pro 9.7 inch and iPhone Xr - both on iOS 15.2. Highest Battery Usage item is Home - Accessories - 67% over the past 10 days!!! I have turned off Home in iCloud. Turned off Notifications for Home. Turned off Location Services for HomeKit. Little improvement.


Given the number of posts about this (here and on Reddit) - this is a very real issue that needs to be addressed by Apple.



iOS 15 Home app and HomeKit have excessive battery drain

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