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17.3 issue: 80 % charging limit broken

Since 17.3 the 80 % charging limit on iPhone 15 Pro Max is broken. Charged to 100 %.

iPhone 15 Pro Max, iOS 17

Posted on Jan 23, 2024 10:29 AM

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Question marked as Top-ranking reply

Posted on Jan 25, 2024 9:59 PM

Yep since 17.3 the 80% is now broken.

6 replies

Jan 25, 2024 10:00 PM in response to chief_resident

iOS updates generally aim to enhance user experience, boost security, and fix bugs rather than disrupt core features. Battery Optimisation issues after updates might stem from underlying, unmentioned factors. Updates won't typically alter personal data but may refine settings or features. Backup before major updates for safety. Review Apple's update details and backup advice for a smooth process.


This seems purely coincidental so please check the Setting on your device.



See what each update does: About iOS 17 Updates, About iOS 16 Updates, About iOS 15 Updates, About iOS 14 Updates, About iOS 13 Updates, About iOS 12 Updates, and so on...



Jan 25, 2024 10:01 PM in response to chief_resident

If Optimised Battery Charging won’t activate

Optimised charging is designed to only engage in locations where you spend the most time, such as your home and place of work. The feature won’t engage when your usage habits are more variable, such as when you travel. Because of this, some location settings must be enabled for Optimised Battery Charging to activate.* None of the location information used for this feature is sent to Apple.

Follow these steps:

  • Go to Settings > Privacy & Security > Location Services and turn on Location Services.
  • Go to Settings > Privacy & Security > Location Services > System Services and turn on System Customisation.
  • Go to Settings > Privacy & Security > Location Services > System Services > Significant Locations and turn on Significant Locations.


Jan 25, 2024 10:03 PM in response to Patrick Terrill

Kindly consider checking your settings and addressing any device issues before attributing the issue to external factors.


If Optimised Battery Charging won’t activate

Optimised charging is designed to only engage in locations where you spend the most time, such as your home and place of work. The feature won’t engage when your usage habits are more variable, such as when you travel. Because of this, some location settings must be enabled for Optimised Battery Charging to activate.* None of the location information used for this feature is sent to Apple.

Follow these steps:

  • Go to Settings > Privacy & Security > Location Services and turn on Location Services.
  • Go to Settings > Privacy & Security > Location Services > System Services and turn on System Customisation.
  • Go to Settings > Privacy & Security > Location Services > System Services > Significant Locations and turn on Significant Locations.


17.3 issue: 80 % charging limit broken

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