iPhone XS: Crazy Siri battery drain overnight

ds2000

macrumors 6502
Original poster
May 24, 2012
332
159
Hi all,
Something I’ve noticed is my phone battery dropping 50% over night. According to the battery information it’s all Siri.

As you can see from the attached screen shot, nothing on the phone is being used, I was asleep.

Has anyone seen this before?

IOS 12.1.2
 

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Yun0

macrumors 68000
Jun 12, 2013
1,516
804
Winnipeg, Canada
Turn siri off then on again, check data usage for it too (i see no wifi icon), and update iOS you arent on the latest.
 

ds2000

macrumors 6502
Original poster
May 24, 2012
332
159
I updated IOS yesterday and the same again last night.

There is no WiFi icon because I’m writing this on the train.

The thing is, it’s only started recently. The phone would normally last 1.5 days.

Tonight I’ll try and disable Siri. Losing 35%+ in 7 hours with zero activity is not a good sign
 

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ds2000

macrumors 6502
Original poster
May 24, 2012
332
159
Was someone whispering 'Hey Siri......." all night? :confused:
Same here, I normally charge on my charging mat over night but decided I'd let the battery run down every so often so noticed it the other night. I'll see how it behaves. Last night it only dropped 3% which I'd say is perfectly normal.
 

Yun0

macrumors 68000
Jun 12, 2013
1,516
804
Winnipeg, Canada
OK, Siri off and we have normal battery usage.
I’ve re-enabled it - “hey Siri” and will see how it goes tonight. I’m still not sure how Siri could munch all that battery
Simple, some loop bug in the code is always possible, happens fairly frequently.
 

ds2000

macrumors 6502
Original poster
May 24, 2012
332
159
Simple, some loop bug in the code is always possible, happens fairly frequently.
Yep, or they're listening to my Mrs babbling in her sleep :p
Maybe now it's been off and back on, maybe that'll cure it
 

gigapocket1

macrumors 68000
Mar 15, 2009
1,726
1,037
Before you turned Siri off. Did you try a simple reboot? I power cycle my devices every so often. I began to notice that these devices are so great. That we honestly never turn them off or hardly ever reset them.
 

theviewer19855

macrumors newbie
Dec 28, 2017
21
6
I am having this issue with my XS Max - I registered in a hurry thinking this was a new post, but just noticed you wrote this more or less this time last year.

Either way did you find a fix? as mine is behaving exactly as you described - with Siri entirely to blame.
 

MotorSt

macrumors newbie
Sep 4, 2019
4
3
SOLUTION!!!
You need to be on iOS 13.4 first... earlier versions had a bug.
The issue is a corrupted Siri preference file not syncing correctly via iCloud to the Siri backend, leading to relentless polling.

The fix is simple.

1. Start with the iPhone.

2. Log out of iCloud on one device, log back into it, Merge when it asks you, then wait for stuff to repopulate (a couple of hours). (Do this one Apple iOS/tvOS/iPadOS device at a time, give the device time to repopulate.)

3. Then do your other devices one by one, slowly (as all your iOS/tvOS/iPadOS devices may have the issue).

No need to do MacOS devices from what we’ve seen here.

The battery drain should stop.

Also, after you plug in and charge once, the battery usage should display correctly and Siri won't appear at that ridiculously high level anymore.

UNLIKELY SECOND STEP:
If this *doesn't* fix things, go to General > Reset > Reset All Settings.
This will flush all pref files... you'll have to set things like Apple Pay cards back up again.
Then do the above iCloud logout/login... (Had to do this on an older (not supported anymore) iPhone 6 I keep about for testing.) So... unlikely that it will be required in never devices.
 
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