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Battery drain since iOS 15.5

Hi,


iPhone SE gen2 about 11 months old, has been running like a Swiss clock since the beginning.


Did the iOS 15.5 update last week, battery health is 92%, but now the battery drain very fast, like30-40% in airplane mode with all apps closed at night.


Tried the usual reboot, long power/home press to clear the cache, logging out of icloud, etc


Please fix ASAP because those issue with battery drain every few updates are too frequent and make it looks like you do not internally test updates.


Thank you.


iPhone SE, iOS 15

Posted on May 26, 2022 7:34 AM

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Question marked as Best reply

Posted on May 26, 2022 10:49 AM

Thanks, I have already all those settings made. I was ok to wait a few for things to settle, but it is almost a full week. So looks like I have to go through everything Apple changed, log off, delete apps and re-install and so on just because they don’t test their stuff properly before release unfortunately.

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44 replies

Jul 14, 2022 12:29 PM in response to NewUserMay2022

Both my iPhone 8 and iPhone 12 were updated to IOS 15.5 2 days ago. Both are now experiencing very fast battery drain. The IPhone 8 use to last me all day, now only a few hours if I don’t use it for phone calls etc. Apple did this to me when I had my iPhone 5. I did the updates back then. The battery basically died, I wiped the iPhone and reinstalled everything but it was never good enough to last even 9 hours at work and ultimately forced me to buy a new phone. Now I’ll have to replace my iPhone 8.

Has Apple abandoned us so they could sell a few more iPhones?

Jul 29, 2022 11:51 PM in response to Hey50

Hey50 wrote: "...The IPhone 8 use to last me all day (...) Now I’ll have to replace my iPhone 8..."

Hey50 ~ With an older model iPhone such as your iPhone 8, it's worth checking the battery's health in case a simple battery replacement is all that's needed...


Does your iPhone 8 still have its original battery?


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


Settings > Battery > Battery Health


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Aug 15, 2022 5:35 AM in response to NewUserMay2022

Running great again…

Hi, sorry for the late update but I was vacationing and other stuff. As I wrote in my earlier note we had two iPhones with significant battery drain immediately after IOS 15.5 update. I tried everything I could think of on the iPhone 8 including deleting all 3rd part apps and resetting the iPhone (actually Erase all Content and Setting). None of this fixed my iPhone 8 and I gave up on/about July 17. Surprisingly, roughly two days later both the IPhone 8 and iPhone 12 started behaving normally. Once again we were both able to get a full day on a single charge. All together we suffered about a week with battery drain.


I can only surmise the Apple discussions advising we just give it time to reorganize was the ultimate fix. The follow link is the discussion I reference.

https://www.macworld.com/article/625340/ios-update-excessive-battery-drain-days.html


I just want to note I spent over 40 years in the IT world so I think I took a pretty organized approach to troubleshooting and avoided the hope and poke approach. If you are contemplating a new iPhone as I was please consider giving it a little time to resolve.


Thanks for listening






Battery drain since iOS 15.5

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