Battery lasts nearly 8 hours, top performance

Evaluating iOS 26.3 Beta 2 after 5 days: Battery reaches nearly 8 hours on-screen, smooth performance. Revealing information about Siri integrating Gemini on iOS 26.4.

5 days have passed since Apple released the iOS 26.3 Beta 2 update. This period of time is enough for users to have the most accurate view of the system’s stability after the background processes are completed.

Besides being satisfied with battery life, the iFan community is also paying attention to shocking leaked information about the next iOS 26.4 update with the presence of Google Gemini.

Let’s summarize with Minh Tuan Mobile the practical experience of the past week!

iOS 26.3 Beta 2: Stability is key, new features are “disappearing”

If you are looking forward to new features in this update, you will probably be a bit disappointed. iOS 26.3 Beta 2 does not bring any significant changes in interface or utilities.

Even the expected feature “Forward Notification” has been removed from the settings and is currently limited to users in the European market (EU).

This shows that Apple is focusing maximally on fixing bugs and optimizing the core system before rolling out bigger features.

Battery life: Spectacular “return”.

The brightest point after 5 days of experience is the battery life. Contrary to the common battery drain concerns in Beta versions, iOS 26.3 Beta 2 demonstrates extremely impressive power management capabilities.

During the most recent day of use with mixed tasks such as surfing TikTok, watching YouTube, messaging WhatsApp and reading books, the device reached 7 hours and 51 minutes of screen time (On-screen) while only consuming about 75% of the battery.

Even on days when I have to travel a lot and use Google Maps continuously using 4G/5G, the device still lasts more than 6 hours on-screen. This is a clear improvement, bringing absolute peace of mind to users who need high-intensity use all day long.

Own iPhone 17 Pro Max to enjoy the longest battery life on iOS 26:

Performance: Say goodbye to lag, impressive graphics scores

In terms of performance, Apple has done a great job of fixing the lag errors that appeared on Beta 1. The experience of swiping, multitasking or opening applications is now smooth and responsive.

Benchmark tests also recorded very high scores, especially the graphics performance score (GPU Metal Score) which is much superior to the average.

This ensures the device can handle any heavy game or complex video editing tasks without any problems.

Big expectations for iOS 26.4: Siri 2.0 and Google Gemini

While iOS 26.3 focuses on stability, all eyes are on the next big update, iOS 26.4.

Reputable sources confirm that Apple has cooperated with Google to bring the Gemini language model to the iPhone. This combination promises to create a smarter version of Siri 2.0, capable of natural conversations and giving more detailed and profound answers than currently.

This is considered a strategic step for Apple Intelligence to compete fairly with other competitors in the AI ​​market.

Important note about downgrades (Downgrade)

One piece of information that users need to pay special attention to is that Apple has now blocked signing of old iOS versions. This means that if you have upgraded to iOS 26, you will no longer be able to downgrade back to iOS 18 (specifically iOS 18.7.3).

So, if you’re still on iOS 18 and prioritize absolute safety, consider carefully before hitting the update button.

As for those who are in iOS 26.3 Beta, get ready to receive Beta 3 expected to be released this week (around January 19-20).