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iPhone SE battery dying unexpectedly after upgrading to IOS15

I still use an iPhone SE (2018 era) as a daily phone- and it has been generally fantastic.


However, since upgrading to IOS15 the phone powers down unexpectedly even though battery voltage is reported as high. This consistently occurs after a few hours of use, and when plugged in to restart and recharge, the battery charge level history shows an abrupt drop from >80% to 0% almost instantaneously (see attached image).


I haven't changed phone habits recently or connected to any new devices. The phone is relatively new and the battery health is reported as 97%, with peak performance supported. If I didn't know better, I would suspect that the battery voltage is being incorrectly assessed but I don't know why this should happen after the upgrade to IOS15 specifically. I didn't have this problem before upgrading.


Thanks for any help you can provide.



iPhone SE, iOS 12

Posted on Dec 15, 2021 11:18 AM

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Question marked as Top-ranking reply

Posted on Dec 16, 2021 4:51 AM

Hello,

The symptoms seem to indicate an issue with the battery. You should have it checked:

Apple - Find Locations

Also see:

iPhone Battery & Power Repair

Good luck.

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iPhone SE battery dying unexpectedly after upgrading to IOS15

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