UI error warning on iOS 26.4 Beta 2 after 3 days of experience

iOS 26.4 Beta 2 impresses with 10-hour battery life but still has annoying UI errors and unstable performance scores.

After 72 hours of installing and using iOS 26.4 Beta 2, the iPhone user community has begun to have clearer comments about this test version. Unlike Beta 1, which was full of concerns about temperature, Beta 2 brings a more secure feeling about usage time.

However, if you are a user who focuses on “huge” performance numbers like the previous iOS 26.3 version, this Benchmark result may make you think again.

Amazing battery life: Reaching 10 hours of continuous use

The biggest highlight of iOS 26.4 Beta 2 is the ability to optimize power. Through the test using a mixture of applications such as Instagram, Threads, TikTok and WhatsApp, the device recorded extremely impressive numbers. During the day of highest intensity use (consuming about 104% of battery capacity), the device achieved more than 10 hours On-screen (SOT). On average, for every 100% battery, you can expect about 9 hours and 30 minutes of continuous use.

On more average days of use (about 71% battery), the device still easily reached 7 hours and 15 minutes On-screen. Compared to Beta 1 or even the official iOS 26.3, this is a clear improvement, helping users feel secure in using their iPhone all day long without having to worry about carrying a backup charger.

To fully experience this “huge” battery life on the sharpest screens, please refer to the iPhone 17 list at Minh Tuan Mobile:

Actual performance is smooth but Benchmark scores are not convincing

In terms of touch and swipe experience, iOS 26.4 Beta 2 operates very smoothly, with almost no lag when opening applications or multitasking. However, the CPU scoring results using Geekbench brought disappointment. Actual tests recorded significantly lower single-core and multi-core scores than expected, especially when compared to the stability of previous iOS 26.3 versions.

GPU scores also recorded large fluctuations when the first run gave quite low results, but then broke out in the second run. This shows that the operating system is still in the process of rearranging resources and has not really stabilized completely at the hardware level. iFans may need to wait for Beta 3 so that Apple can fine-tune the power of the processor chip more accurately.

“Annoying” interface error and expectations for Beta 3

One problem that iOS 26.4 Beta 2 users are facing is a display error in the wallpaper editing menu. Specifically, the “Edit” button is sometimes pushed up, located below the Wi-Fi icons and battery bar in the corner of the screen, making it difficult to operate. Although this is only a small interface (UI) error, it brings certain discomfort during the device personalization process.

Besides, the expected breakthrough features such as Siri 2.0 or deep Gemini AI integration have not really appeared clearly in this Beta version. Based on the build number ending in “e”, Apple will certainly release more test versions. It is expected that iOS 26.4 Beta 3 will officially launch around March 2, promising to fix UI errors and stabilize performance scores.

In short, if you are looking for a version with a “buffalo” battery to experience basic Apple Intelligence features, iOS 26.4 Beta 2 is a very good choice. However, if you need absolute stability and top performance, please patiently stay with the official iOS 26.3 version. Don’t forget to visit the Minh Tuan Mobile system to get support in testing the software and receive advice on the best old Fall – New subsidy programs on the market today!