iPhone 13 battery percentage stuck, only updating value on reboots

My iPhone 13 Pro battery percentage indicator is stuck, and/or very slow to decrease, not following real battery percentage.


Actual battery status is only updated on reboots of the phone. So for example if I reboot after some hours of using the phone the battery will go from like 85% to 60%, because the iPhone couldn't correctly track the battery depletion in the meantime. This is confirmed by briefly connecting the phone on a Mac with Coconut Battery, the reading on phone is higher and way off than the real charge.


A "restore as a new phone" didn't fix it. A restore in DFU mode didn't fix it either, as it didn't charging to 100%. Using iOS 15.0.1. The problem is widespread also on the base and max models, there are multiple reports also on new devices, even if on mine it seemingly started after an hard reboot.


Any chance to fix this?

iPhone 13 Pro

Posted on Oct 5, 2021 10:24 AM

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21 replies

Oct 17, 2021 5:27 AM in response to thingo

15.0.2 started this issue for me with iPhone 13 Pro Max. Battery % will show a full charge for 9-10 hours on idle, only updating when I manually turn off phone, turn it back on. (no hard reboot). Then it may show the updated % of 92-93%, stuck again until you reboot the phone.


ALSO, under Coconut Battery, my "health" after 15.0.2 looks like it took a major hit. Launch day...just 22 days ago, an awesome 103-104%. After 15.0.2 update, 94-95% (iPhone reads "Health - 100%)


Right now, I'm not sure what to believe, if the phone's numbers -%'s are totally messed up and Coconut can't read it...which I actually hope this is the case. OR, this update really did fry my battery. Only hope the next update will fix this!


Right now, I'm fairly disgusted with the way this brand new phone is acting.

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iPhone 13 battery percentage stuck, only updating value on reboots

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