Review actual performance and battery

iOS 26.4 Beta 2 officially fixes charging errors and significantly improves battery life, bringing an extremely smooth experience to iPhone users.

Right on schedule, Apple has released the second test version of the iOS 26.4 operating system with a capacity of about 1.38 GB on the iPhone 17 Pro Max line.

More than just a regular patch, Beta 2 shows Apple’s efforts in optimizing hardware and software, especially when rival Samsung’s Unpacked event is taking place.

For those who are having trouble in Beta 1, this is a “salvage” that cannot be missed to bring the iPhone back to its most perfect operating state.

Improved RCS connection and security between iPhone and Android

One of the most valuable upgrades in iOS 26.4 Beta 2 is the completion of end-to-end encryption for RCS messages. If in previous versions, this feature was limited, now iPhone users can text completely securely with Android devices. The system will clearly display the “RCS Encrypted” message right in the Messages application, bringing absolute peace of mind for cross-platform conversations.

In addition, Apple also updated the new modem Firmware in Beta 2. This promises to significantly improve Wi-Fi and 5G reception, helping to maintain a more stable connection in areas with weak signals or crowded public places.

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Breakthrough performance: CPU reaches nearly 10,000 multi-core points

In terms of processing power, iOS 26.4 Beta 2 recorded extremely impressive Benchmark scores right from the first run. Specifically, the device reached about 3,821 single-core points and reached 9,929 multi-core points. This is a record high score for a Beta version, proving that the ability to optimize RAM and the A19 Pro processor chip is on the right track.

Practical experience shows that the keyboard lag phenomenon that caused discomfort in previous versions has completely disappeared. Heavy applications such as Camera or App Store also provide faster response speeds, although sometimes the App Store still has a slightly slow data loading situation due to server problems.

Battery life and a series of “annoying” errors have been fixed

The best news for the technology-loving community is that Apple has completely fixed the charging bug. Previously, many users complained about the iPhone not receiving charging when plugged into PD (Power Delivery) chargers, but on Beta 2, everything is working normally again. The Wallpaper bug has also been resolved, helping the colors displayed on the lock screen always vibrant and realistic.

Regarding battery, iOS 26.4 Beta 2 shows a clear improvement in usage time. Through high-intensity testing, the device only consumes 63% of the battery for more than 5 hours of continuous On-screen.

This is a very positive number for a test version, far exceeding the “poor” battery level of the first Beta versions. The phenomenon of device heating after updating is also well controlled thanks to the vapor chamber cooling system that operates more effectively under the coordination of the new operating system.

Should I upgrade to iOS 26.4 Beta 2 right now?

All in all, if you’re on Beta 1, upgrade to Beta 2 immediately to enjoy better stability and battery life. For common users who are on the official iOS 26.3 version, the advice is still to wait patiently until the Public Beta or official version launches in March to ensure absolute data safety.

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