The recent iOS 26 update has sparked widespread attention among iPhone users due to a temporary drop in battery performance immediately after installation.
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Apple confirmed in an official support document that this decrease is normal and expected with major updates and that battery levels return to normal after a short period of regular use.
Why iPhone Batteries Are Affected After iOS 26
Apple explained that the temporary battery drop is caused by background processes that the system runs automatically after the update. These include:
Indexing files and data
Updating apps
Downloading essential system packages
These processes consume extra power for a limited time, after which the battery stabilizes once regular usage resumes.
iOS 26 is one of the largest updates in iPhone history, introducing the Liquid Glass design for all supported devices, while iPadOS 26 offers the same design for iPads.
How to Preserve Battery Life After Updating
Tech experts recommend these simple steps to reduce battery drain after installing iOS 26:
Disable unnecessary location services
Turn off background app refresh
Lower screen brightness
Let the device complete its internal processes without heavy usage initially
Apple emphasized that temporary battery performance drops are common with most iOS and iPadOS updates, not just iOS 26.
Key Features of iOS 26
Liquid Glass Design – Transparent, floating interface effects across system apps, creating a modern, fluid visual experience.
Visual Intelligence – Smart interaction with on-screen content, recognizing elements in photos and text for actions like adding calendar events or searching apps.
Instant Translation – Real-time translation in Messages, FaceTime, and Phone apps.
Communication Enhancements – New tools for handling unwanted calls, such as Call Screening and Hold Assist.
Updated Camera App – Simplified interface, improved image quality, and expanded shooting modes.
Wallet & CarPlay Updates – Wallet now supports digital passports, while CarPlay adds features like Live Activities and widget control.
Apple stresses that installing updates like iOS 26 is crucial for security and performance improvements. Despite the temporary battery impact, the overall experience becomes more secure and efficient.
iPhones Compatible with iOS 26
Apple confirmed that all devices released since 2019 are eligible for iOS 26, including:
iPhone 17 series
iPhone Air
iPhone 16 series
iPhone 15, 14, 13, 12, and 11 series
iPhone SE (2nd and 3rd generation)
This demonstrates Apple’s commitment to supporting a wide range of devices and providing the new system experience to millions of users globally.