5 hours of battery only consumes 66%, so smooth!

iOS 26.4 RC records stable battery life and the ability to thoroughly fix keyboard errors, bringing the smoothest experience for iPhone users.

The iOS 26.4 RC (Release Candidate) update has officially arrived and after exactly 24 hours of experience, we have our first overview of the stability of this operating system. Although iOS normally takes 2 to 3 days to really optimize background processes, what the RC version showed on the first day brought many positive signals.

In particular, this is an important patch that helps completely resolve user complaints about keyboard sensitivity over the past time.

Actual battery life: Promising results after the first 24 hours

In terms of energy, iOS 26.4 RC shows quite good battery management right from the moment it is installed. Through practical usage tests with mixed tasks such as surfing Threads, watching YouTube and Instagram, the device consumes about 66% of the battery capacity for more than 4 hours and 47 minutes of continuous use (On-screen).

This is considered a very positive number for a new update. On average, your iPhone can last for 7 to 8 hours of continuous use if fully charged 100%. Users can expect this time to improve further after a few days as the system completes indexing and organizing resources.

To fully experience the smoothness of the new operating system on a standard 120Hz color screen, everyone can immediately refer to the iPhone 17 list here:

GPU performance is skyrocketing while CPU is gradually stabilizing

In terms of processing power, iOS 26.4 RC brings contrasting emotions through Geekbench 6 scores. In terms of CPU, the current single-core and multi-core scores are average (about 2,800 single-core and 8,500 multi-core), slightly lower than the previous Beta 4. However, this usually happens in the early stages after an update and will soon stabilize in the final version.

In contrast to the CPU, graphics performance (GPU) is a bright spot. Benchmark results recorded a GPU score exceeding the 28,000 mark, significantly higher than the average. Extremely good GPU optimization helps tasks related to Apple Intelligence artificial intelligence, heavy graphics gaming or video processing go extremely smoothly, without any stuttering or dropped frames.

Good news: The frustrating keyboard error has officially been fixed

One of the most valuable improvements in iOS 26.4 RC is the accuracy of the keyboard. If in previous Beta versions, users often encountered typing wrong characters or slow responses, now everything works perfectly. The current typing experience is extremely responsive and accurate, bringing a feeling of absolute reliability to users in daily work and communication.

However, a small note is that some features such as “Focus” (Do Not Disturb) sometimes still have an error displaying light notifications on the lock screen. Hopefully Apple will make the final tweaks so that the general release next week (expected March 23) achieves the most perfection.

Conclusion: Should you upgrade now?

All in all, iOS 26.4 RC after 24 hours of use has proven its software maturity. With stable battery life and top-notch graphics performance, this is a version worth experiencing right now, especially those who want to put an end to keyboard errors.

Don’t forget to visit Minh Tuan Mobile system to receive support from a team of technicians to check your device and update the safest software. We are always ready to advise on the new iPhone 17 and iPhone 16 models with the old Fall – Renew policy with extremely high subsidies so you can confidently anticipate technology trends in 2026!