iPhone battery draining fast right after an update
Your iPhone is reindexing Spotlight and rebuilding its system after the update. This drains battery for 24-48 hours while it works in the background. Wait a day or two — the battery will return to normal once the reindexing finishes.
When you update iOS, your iPhone rebuilds its system index in the background. This process, called Spotlight reindexing, uses a lot of power and makes the battery drain faster than normal. It finishes within 24-48 hours and battery returns to normal. You can speed it up by letting the phone charge overnight, or turn off background activity while waiting.
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Skip — I just want a technicianCommon mistakes to avoid
- Assuming the battery is broken after an update — reindexing always causes temporary drain
- Restarting the phone repeatedly thinking it will help — this just makes reindexing take longer
- Not updating apps to the latest versions that support the new iOS
Signs you need professional help
- Battery is still draining fast after 48 hours even though no specific app shows excessive usage
- The phone is very warm 48 hours after the update
- Battery drain gets worse instead of better after 24 hours
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