iPhone 13 battery draining faster after iOS 18.3 update

Hello, on ios 18.3 problem with the autonomy, the battery began to drain very quickly, before on ios 18.0 it to be 7 hours and more screen time is now 6 hours almost



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Posted on Feb 6, 2025 09:21 AM

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Posted on Feb 7, 2025 03:47 AM

I installed the update more than a week ago, the system should have already been optimized and worked fine every day. The same thing happens. The phone runs out quickly.

3 replies

Feb 6, 2025 02:38 PM in response to themovsarov

This is normal. After an update, your iPhone has to carry out several background tasks including indexing to complete, in which they can consume more power than normal. When the update is fully complete, your iPhone's power will return to normal.


Please also read my User Tip: Addressing the Common Increased Battery Drain and Thermal Temperature Conditions Your iPhone May Face After Setup and Updates

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iPhone 13 battery draining faster after iOS 18.3 update

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