We put the Asus Zenfone 11 Ultra through our rigorous SBMARK Display test suite to measure its performance Cons four criteria. In the results of this test, we will analyze how it performed in a series of tests and in several common use cases.
Overview
Key display specifications
- 6.78 inch OLED
- Dimensions: 163.8 x 76.8 x 8.9 mm (6.45 x 3.02 x 0.35 inches)
- Resolution: 1800 x 2400 pixels, (density ~388 ppi)
- Aspect ratio: 20:9
- Refresh rate: 144Hz
Pros
- Good brightness in indoor conditions
- Smooth visualization in all use cases
- Uniform screen brightness
Against
- The screen is too bright in low light conditions
- The screen is slightly too bright when watching HDR10 videos in low light
- Long time from touch to answer and unwanted touches
The Asus Zenfone 11 Ultra’s display showed solid performance in our tests, with well-balanced scores across features.
The device showed good brightness under sunlight, making the screen very readable in difficult conditions, although there was some lack of contrast in darker shades. On its website, Asus claims a peak brightness of 2,500 nits to ensure “easy readability even under direct sunlight,” although our tests in bright lighting conditions measured peak brightness at 2,320 nits.
In indoor conditions, the screen brightness of the Zenfone 11 Ultra was slightly higher than that of its competitors.
The Zenfone 11 Ultra’s screen colors were rendered naturally when tested in Natural mode for Display-P3 content and in Standard mode for sRGB content.
The device delivered a good overall experience when watching HDR10 videos, with frame drops well-handled and sufficient brightness in most conditions, except in low-light conditions, when the luminance was a little too intense. However, our experts noted that chromatic highlights were desaturated on certain content, which was particularly noticeable on blue colors. (More on this in the video section.)
Test summary
About SBMARK display tests: For scoring and analysis, a device is subjected to a series of objective and perceptual tests under controlled laboratory and real-life conditions. The SBMARK Display Score takes into account the overall user experience provided by the screen, considering hardware capability and software optimization. Only factory-installed video and photo apps are used during testing. More in-depth details on how SBMARK tests displays can be found in the article “A Closer Look at SBMARK Display Testing.”
The following section focuses on the key elements of our comprehensive testing and analysis performed in SBMARK laboratories. Comprehensive reports with detailed performance evaluations are available upon request. To order a copy, contact us.
How the display readability score is composed
Readability measures how easy and comfortable it is for a user to view fixed content, such as a photo or web page, on a display under different lighting conditions. Our lab measurements are complemented by perceptual testing and analysis.
Skin tone rendering in an indoor environment (1000 lux).
From left to right: Asus Zenfone 11 Ultra, Honor Magic6 Pro, Apple iPhone 15 Pro Max, Huawei Mate 60 Pro
(Photo for illustrative purposes only)
Skin tone rendering in a solar environment (>90,000 lux).
From left to right: Asus Zenfone 11 Ultra, Honor Magic6 Pro, Apple iPhone 15 Pro Max, Huawei Mate 60 Pro
(Photo for illustration purposes only)
SCI stands for Specular Component Included, which measures both diffuse and specular reflection. The reflection of a simple glass pane is around 4%, while it goes up to around 6% for a plastic pane. Although the first surface of smartphones is made of glass, their total reflection (without coating) is usually around 5% due to the multiple reflections created by the complex optical stack.
The average reflectance is calculated based on the spectral reflectance in the visible spectrum range (see graph below) and human spectral sensitivity.
Uniformity
This graph shows the distribution of luminance across the entire display panel. Uniformity is measured with a 20% gray pattern, with bright green indicating ideal luminance. A bright green color evenly distributed across the screen indicates that the display is uniformly bright. Other colors indicate a loss of uniformity.
Displays flicker for 2 main reasons: refresh rate and pulse width modulation. Pulse width modulation is a modulation technique that generates pulses of variable width to represent the amplitude of an analog input signal. This measurement is important for comfort because low frequency flickering can be perceived by some individuals and, in extreme cases, can induce seizures. Some experiments show that discomfort can occur at a higher frequency. A high PWM frequency (>1500 Hz) tends to be less disturbing to users.
How the display color score is composed
Color evaluations are performed under different lighting conditions to see how well the device handles color with its surroundings. The devices are tested with sRGB and Display-P3 image models. Both faithful mode and default mode are used for our evaluation. Our measurements performed in laboratories are complemented by perceptual tests and analyses.
Circadian action factor is a metric that defines the impact of light on the human sleep cycle. It is the ratio between the light energy that contributes to sleep disturbances (centered around 450 nm, representing blue light) and the light energy that contributes to our perception (covering 400 nm to 700 nm and centered at 550 nm, which is green light). A high circadian action factor means that the ambient light contains strong blue light energy and is likely to affect the body’s sleep cycle, while a low circadian action factor means that the light has weak blue light energy and is less likely to affect sleep patterns.
How the Display Video score is composed
The video attribute evaluates the handling of Standard Dynamic Range (SDR) and High Dynamic Range (HDR10) videos in indoor and low-light conditions. Our laboratory measurements are complemented by perceptual tests and analyses.
Video rendering in a low light environment (0 lux).
Clockwise from top left: Asus Zenfone 11 Ultra, Honor Magic6 Pro, Apple iPhone 15 Pro Max, Huawei Mate 60 Pro
(Photo for illustrative purposes only)
We measured low gamma with HDR10 content (top right graph). As shown in the illustration below, we observed strong changes in color rendition when viewing high-intensity colors. But this effect was limited in typical video scenes that contained lower intensity colors.
In HDR10, colors become desaturated, especially blue, as they lighten.
These indicators present the percentage of frame irregularity in a 30-second video. These irregularities are not necessarily perceived by users (unless they are all with the same timestamp) but are an indicator of performance.
How the Display Touch score is composed
We evaluate touch attributes in many types of content where touch is critical and requires different behaviors such as gaming (fast touch and response times), web (smooth page scrolling), and images (accurate and smooth navigation from image to image). other ).
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