Graphics performance skyrockets

Evaluating iOS 26.3 Beta 1 after 24 hours shows battery life of more than 8.5 hours and the highest GPU graphics performance score ever.

Right before Christmas, Apple suddenly released the first test version of iOS 26.3 for developers.

Usually, the first Beta versions (Beta 1) often come with the stereotype of battery drain, device overheating and lack of stability.

However, after 24 hours of practical experience with this version, the results received were completely contrary to those concerns.

iOS 26.3 Beta 1 is showing extremely positive signals, even record numbers in graphics performance that even the previous official version has not achieved.

To experience iOS 26.2 as smoothly as possible, upgrade your device:

Shocking battery life: More than 8 and a half hours On-screen on the first day

The most impressive point and what users are most interested in is battery life. On the first day after the update – a time when the device often has to run many processes in the background to stabilize the system – the device produced an unexpected result.

With 92% battery consumption, users achieved 8 hours and 35 minutes of screen time (Screen On Time). This is a really “huge” number for a Beta 1 version.

Notably, this result was achieved under mixed usage conditions with many power-hungry apps such as TikTok, Instagram, YouTube, Spotify and WhatsApp.

Practical experience shows that the battery graph decreases very steadily, without any phenomenon of battery drain or abnormal heating. The feeling of use is very smooth and reassuring, like running an official update that has been thoroughly optimized, not a primitive test version.

GPU graphics performance breaks all old records

If the battery was a pleasant surprise, the performance, especially the graphics processing capability (GPU), was a big shock. In Geekbench benchmark tests, iOS 26.3 Beta 1 set a new record.

GPU Metal scores recorded through two consecutive tests are 28,336 and 28,451 points respectively. This is the highest score ever recorded on this device, far exceeding the average and much higher than what previous iOS 26.1 or 26.2 versions did.

This jump in GPU scores is a very good sign for mobile gamers. It promises smoother image processing and more stable frame rates in heavy games.

Although the single-core and multi-core CPU scores are slightly lower than the official iOS 26.2 version (which is understandable in Beta versions), the strong compensation in the graphics segment shows that Apple is making deep tweaks to image processing capabilities in this version.

The experience is smooth even though there are still some small glitches

In terms of general stability, iOS 26.3 Beta 1 works very smoothly. During 24 hours of continuous use, the device only recorded about 2 transient lags, all other swipes and touch operations went smoothly. For an early Beta, this level of stability is commendable.

However, the question is whether to update immediately or not? Despite its impressive battery life and record GPU scores, this is still a developer version.

If you are a general user who needs absolute security for your primary device, staying with iOS 26.2 is still the wisest choice.

But if you’re a tech lover who wants to experience top-notch graphics performance and accept a few small risks, iOS 26.3 Beta 1 is definitely an interesting Christmas gift worth checking out.