IPhone iOS 26 Update – How to Update (au)
- following the release of iOS 17, numerous iPhone users reported experiencing considerably faster battery drain than usual.
- Apple has acknowledged the reports of increased battery drain but attributes it to increased background activity that occurs after a major iOS update.
- The company suggests that users allow their iPhones to remain connected to power during this initial period to minimize disruption.
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iPhone Battery Drain Concerns After iOS 17 Update: Apple Responds
Table of Contents
Published September 21, 2025, at 02:59 AM PDT
What Happened?
following the release of iOS 17, numerous iPhone users reported experiencing considerably faster battery drain than usual. Reports surfaced almost immediately after the update became available, with users taking to social media and Apple’s support forums to voice their concerns. CNET Japan reported on apple’s description, characterizing the issue as “normal behavior.”
Apple’s Explanation: Background Activity
Apple has acknowledged the reports of increased battery drain but attributes it to increased background activity that occurs after a major iOS update. This activity includes tasks such as re-indexing photos, updating Spotlight search, and optimizing apps for the new operating system. According to Apple, this process can take up to 48 hours to complete, during which time battery life may be noticeably shorter.
The company suggests that users allow their iPhones to remain connected to power during this initial period to minimize disruption. While Apple frames this as expected behavior, the extent of the battery drain experienced by some users has led to frustration and skepticism.
User Experiences and Reported Issues
User reports vary, but common complaints include a notable reduction in screen-on time and faster-than-usual battery percentage drops, even with minimal usage. Some users have reported their iPhones losing as much as 20-30% battery life within a few hours, a stark contrast to their typical usage patterns. Specific iPhone models, including the iPhone 14, iPhone 15, and older models, have been frequently mentioned in user reports.
Several users have also noted that the battery drain seems particularly pronounced when using certain apps, such as social media platforms and streaming services. However, it’s unclear whether this is due to the apps themselves not being fully optimized for iOS 17 or a more general issue with the operating system.
Is This Normal? A Historical Viewpoint
increased battery drain following a major iOS update is not unprecedented. Similar reports have surfaced after previous iOS releases, including iOS 16 and iOS 15. However, the severity of the battery drain reported with iOS 17 appears to be more significant for some users.
| iOS Version | Reported Battery Drain Issues | Apple’s Explanation |
|---|---|---|
| iOS 15 | Moderate battery drain reported in the first few days. | background indexing and initial setup processes. |
| iOS 16 | Similar to iOS 15, with some reports of Spotlight indexing issues. | Background activity and Spotlight re-indexing. |
| iOS 17 | Significant battery drain reported by manny users. | Extensive background activity, including photo re-indexing and app optimization. |
Troubleshooting Steps and Potential Solutions
While Apple advises allowing 48 hours for background activity to complete,users can take several steps to mitigate battery drain meanwhile:
- Keep iPhone Plugged In: Connect your iPhone to a power source whenever possible during the initial 48 hours.
- Reduce Background App Refresh: disable Background App Refresh for apps that you don’t frequently use (Apple Support – Background App Refresh).
- Lower Screen Brightness: Reduce screen brightness