iOS 26 Beta 7: iPhones get alerts when performance drops

VHO - iOS 26 Beta 7 brings the Adaptive Power feature to help iPhone save battery more intelligently, while also adding blood oxygen measurement and Liquid Glass tweaks.

Apple has just released iOS 26 Beta 7, bringing a series of new features focused on the user's battery experience and health. Adaptive Power - a smart power management feature - will warn when the iPhone's performance is down to optimize battery life, while Liquid Glass continues to be refined. At the same time, iOS 26 Beta 7 and watchOS 27 Beta 7 also restore the blood oxygen measurement feature on Apple Watch with a new display mechanism.

Photo source: Phone Arena.

Adaptive Power: More refined battery management

The biggest highlight in iOS 26 Beta 7 is Adaptive Power. This is a new battery management mode, designed by Apple to provide a balance between performance and battery life.

Users can find this option in Settings > Battery > Power Mode with a toggle for “Adaptive Power Notifications.” When enabled, the iPhone will automatically make small changes like lowering the screen brightness, adjusting background activity, and activating Low Power Mode when the battery is at 20 percent.

Unlike Power Saving mode, which turns off many features aggressively, Adaptive Power aims to be more subtle and intelligent. It still retains some necessary functions, but optimizes just enough to extend usage time without making users feel too restricted.

Photo source: Phone Arena.

Power Save Mode: A Familiar But Necessary Change

Along with Adaptive Power, Low Power Mode continues to be maintained and added with a few tweaks. When activated, this feature will:

Turn off 5G for most tasks except large downloads and video streaming.

Disable Always On Display feature.

Reduce ProMotion refresh rate to 60Hz.

Reduce auto-lock time to 30 seconds.

Pause background app refresh, iCloud Photos sync, and automatic downloads.

These changes aren't new, but combined with Adaptive Power, users now have two more levels of power management: a gentler mode and a more aggressive mode for when battery life really needs to last.

Photo source: Phone Arena.

Liquid Glass: More transparency in Beta 7

In addition to the battery feature, Apple also continues to adjust the Liquid Glass interface - the characteristic transparency effect in iOS 26. In Beta 7, this effect is made clearer, less confusing, creating a gentle feeling when operating.

This change shows that Apple is still testing to find the optimal balance before releasing the official iOS 26 version next September.

Adaptive Power combined with Apple Intelligence

Notably, Adaptive Power and Adaptive Power Notifications are integrated with AI (Apple Intelligence). Automatic battery adjustments will no longer be mechanical, but will learn each person's usage habits.

List of supported devices includes:

iPhone 15 Pro, iPhone 15 Pro Max

iPhone 16, iPhone 16e, iPhone 16 Plus

iPhone 16 Pro, iPhone 16 Pro Max

This shows that Apple is making battery and performance part of its personalized AI ecosystem, rather than just a traditional power-saving feature.

Blood oxygen measurement returns to Apple Watch

In addition to iOS 26 Beta 7, Apple also released watchOS 27 Beta 7, which brings back support for blood oxygen measurement (SpO2).

Previously, this feature was discontinued due to a patent dispute with Masimo, leading to a ban on importing Apple Watches in the US. Apple's new solution is to transfer SpO2 data from Apple Watch to the Health app on the iPhone, instead of displaying it directly on the watch screen.

Apple Watch models that benefit include:

Apple Watch Series 9

Apple Watch Series 10

Apple Watch Ultra 2

With this solution, users can still monitor blood oxygen levels (usually ranging from 95% – 100% in healthy people), while Apple avoids legal trouble.

Final Beta before iOS 26 stable

Apple’s release of iOS 26 Beta 7 — just a week after Beta 6 — suggests that testing is nearing its final stages. At this pace, there are likely only 1–2 more betas before iOS 26 officially launches in September.

Many users who have been testing since June have said that iOS 26 Beta is stable, has few major bugs, and has provided an early look at new features. However, most are still waiting to return to the stable version for the smoothest experience.

iOS 26 Beta 7 marks a major step forward in battery management with Adaptive Power – a smart, flexible, and less disruptive mode. In parallel, Apple continues to refine the Liquid Glass interface and restores the blood oxygen measurement feature on Apple Watch.

With these changes, iOS 26 promises to be not only an interface upgrade, but also a step forward in the way Apple integrates AI into the battery and health experience. Users will not have to wait long, because in just a few weeks, the stable version of iOS 26 will officially launch with the new generation of iPhone.

According to Phone Arena

Source: https://baovanhoa.vn/nhip-song-so/ios-26-beta-7-iphone-duoc-canh-bao-khi-hieu-suat-giam-162214.html