If Optimized Battery Charging doesn't activate
Optimized charging is designed to engage only in locations where you spend the most time, such as your home and place of work. The feature doesn't engage when your usage habits are more variable, such as when you travel. Because of this, some location settings must be enabled for Optimized Battery Charging to activate.* None of the location information used for this feature is sent to Apple.
Make sure that these settings are enabled:
- Settings > Privacy & Security > Location Services > Location Services.
- Settings > Privacy & Security > Location Services > System Services > System Customization.
- Settings > Privacy & Security > Location Services > System Services > Significant Locations > Significant Locations.
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* Optimized Battery Charging needs at least 14 days to learn your charging habits, so it won't engage before then. Also, your iPhone needs to experience at least 9 charges of 5 hours or more in a given location for Optimized Battery Charging to engage.