Millions of iPhone users around the world have installediOS 26, officially released on September 15, 2025, and many noticed a significant reduction in battery life in the first few days after the update. Esse phenomenon generated complaints on online forums and social networks, with reports of faster drainage even with moderate use. Apple issued a statement acknowledging the temporary increase in power consumption, attributing it to intensive optimization processes running in the background by the operating system.
These procedures are necessary to adapt the new software to each device’s specific hardware and user data. Eles include file reindexing to improve searches on Spotlight, readjusting battery estimates, and integrating new artificial intelligence features. The company guarantees that, after completing these tasks, autonomy returns to normal or even improves compared to the previous version.
The update to iOS 26 brought new features such as the Liquid Glass redesign and advances in the Apple Intelligence suite, but required profound adjustments to the system. Testes indicate that consumption can be up to 20% higher in the first hours or days, depending on the volume of data stored on the device.
Initial optimization process
The increase in consumption occurs because the iPhone performs several simultaneous operations immediately after installing iOS 26. One of the main ones is the recreation of Spotlight indexes, which catalog photos, messages, emails and applications to speed up searches. Esse task is processing intensive, especially on large content libraries.
At the same time, the system recalibrates battery health data to align the displayed percentages with the new power demands of iOS 26. Native and third-party Aplicativos also undergo compatibility adjustments in the background.
- Reindexing multimedia content and documents
- Download visual assets for the new design
- Initial training of Apple Intelligence models with local data
- Automatically update apps for optimization
These activities are scheduled to occur preferably during periods of inactivity, but may impact the battery in daily use until completion.
Differences between iPhone models
The impact varies depending on the device hardware. Modelos older ones, like the iPhone 11 and variants, feel the effect more because their processors need to operate with greater effort to complete iOS 26 tasks. Nesses cases, the optimization phase can last several days.
Recent devices, equipped with A17 Pro or higher chips, manage operations more efficiently. The advanced architecture allows you to complete indexing and adjustments within 24 hours, minimizing extra battery drain. Apple designs software to make the most of newer hardware, resulting in faster adaptation.
This variation explains why some iPhone 16 users report rapid normalization, while owners of 2019 models face a longer period.
Role of Apple Intelligence in consumption
The Apple Intelligence suite represents one of the biggest new features of iOS 26 and contributes significantly to initial consumption. Recursos like advanced face and object recognition in photos, intelligent editing tools, and integration with Siri require onboard processing to preserve privacy.
During initial configuration, the system personalizes AI models based on user habits, which requires high computational resources. Funções as Genmoji creation and automatic album organization in the Fotos app rescans entire libraries.
After this phase, the impact decreases substantially, as the algorithms begin to operate in an optimized way. The company claims that, in the long term, these tools can even contribute to energy savings in routine tasks.
Native app updates
In addition to Apple Intelligence, native apps have received improvements that require extra processing at the beginning. The Fotos app, for example, applies more accurate algorithms to identify people, animals and objects, reprocessing the entire gallery.
The Apple Music features AI-based AutoMix for smooth transitions between tracks, requiring prior track analysis. Mapas incorporated detailed topographic maps and enhanced offline routes, involving downloading and processing of large volumes of data.
These updates temporarily increase consumption, but aim to improve the overall user experience after stabilization.
Recommendations for users
To reduce inconveniences during iOS 26 optimization, experts suggest installing the update at night, with the iPhone connected to the charger and a stable Wi-Fi network. Isso allows heavy tasks to run without interfering with daily use.
Keeping the device plugged in for the first few days speeds up the process. Evitar high-consumption apps, such as graphically intensive games or video editing, help preserve charge until normalization.
Patience is essential, as this is an automatic procedure that resolves itself within a few days.
Device compatibility
iOS 26 covers a wide range of models, starting with the iPhone 11, including lines 12, 13, 14, 15 and the new iPhone 16 series. Second and third generation Modelos SE also receive the update.
Full features of the Apple Intelligence, however, are restricted to devices with more advanced processors, capable of dealing with high neural demands. Essa limitation ensures smooth performance on these devices.
Users can check eligibility and install via Ajustes > Geral > Atualização from Software.
