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Asus Zenfone 11 Ultra
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Asus Zenfone 11 Ultra Display test

We put the Asus Zenfone 11 Ultra through our rigorous DXOMARK Display test suite to measure its performance across four criteria. In this test results, we will break down how it fared in a variety of tests and 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, (~388 ppi density)
  • Aspect ratio: 20:9
  • Refresh rate: 144 Hz

Scoring

Sub-scores and attributes included in the calculations of the global score.

Asus Zenfone 11 Ultra Asus Zenfone 11 Ultra
143
display
142

164

148

165

143

163

135

164

Pros

  • Good brightness in indoor conditions
  • Smooth display in all use cases
  • Uniform screen brightness

Cons

  • Screen is too bright in low-light conditions
  • Screen is slightly too bright when watching HDR10 videos in low light
  • Long time from touch to response, and unwanted touches

The Asus Zenfone 11 Ultra display showed a solid performance in our testing, with scores that were well-balanced across the attributes.

The device showed good brightness under sunlight, making the screen very readable in challenging conditions, even though there was some lack of contrast in the darkest shades. On its website, Asus claims a peak brightness of 2,500 nits to ensure “easy readability even under direct sunlight” although our tests under intense lighting conditions measured peak brightness at 2320 nits.

In indoor conditions, the Zenfone 11 Ultra’s screen luminance was slightly higher than that of its competitors.

The Zenfone 11 Ultra’s screen colors were rendered naturally when tested in the Natural Mode for Display-P3 content and Standard Mode for sRGB content.

The device provided an overall good experience watching HDR10 videos, with well-managed frame drops and sufficient brightness in most conditions except low light, when luminance was slightly too bright. However, our experts noticed that the color highlights were desaturated on specific content, which was particularly noticeable on blue colors. (Read more about this in the video section.)

Test summary

About DXOMARK Display tests: For scoring and analysis, a device undergoes a series of objective and perceptual tests in controlled lab and real-life conditions. The DXOMARK Display score takes into account the overall user experience the screen provides, considering the hardware capacity and the software tuning. In testing, only factory-installed video and photo apps are used.  More in-depth details about how DXOMARK tests displays are available in the article “A closer look at DXOMARK Display testing.”

The following section focuses on the key elements of our exhaustive tests and analyses performed in DXOMARK laboratories. Full reports with detailed performance evaluations are available upon request. To order a copy, please contact us.

Readability

142

Asus Zenfone 11 Ultra

164

Samsung Galaxy S24 Ultra
How Display Readability score is composed

Readability evaluates the user’s ease and comfort of viewing still content, such as photos or a web page, on the display under different lighting conditions. Our measurements run in the labs are completed by perceptual testing and analysis.

Luminance under various lighting conditions
This graph shows the screen luminance in environments that range from total darkness to outdoor conditions. In our labs, the indoor environment (250 lux to 830 lux) simulates the artificial and natural lighting conditions commonly seen in homes (with medium diffusion); the outdoor environment (from 20,000 lux) replicates a situation with highly diffused light.
Contrast under various lighting conditions
This graph shows the screen’s contrast levels in lighting environments that range from total darkness to outdoor conditions. In our labs, the indoor environment (250 lux to 830 lux) simulates the artificial and natural lighting conditions commonly seen in homes (with medium diffusion); the outdoor environment (from 20,000 lux) replicates a situation with highly diffused light.
Photo EOTF
The Electro-Optical Transfer Function (EOTF) defines how bits are converted into luminance out of the display. Gray levels (horizontal axis) represent the different shades from pure white (100% gray level) to pitch black (0% gray level). The standard for still images follows a 2.2 gamma. The flatter the curves, the harder it is to perceive differences between consecutive shades. This phenomenon is more frequent under intensive lighting conditions (20,000 lux) in the low gray level regions.
Photo EOTF
The Electro-Optical Transfer Function (EOTF) defines how bits are converted into luminance out of the display. Gray levels (horizontal axis) represent the different shades from pure white (100% gray level) to pitch black (0% gray level). The standard for still images follows a 2.2 gamma. The flatter the curves, the harder it is to perceive differences between consecutive shades. This phenomenon is more frequent under intensive lighting conditions (20,000 lux) in the low gray level regions.
Photo EOTF
The Electro-Optical Transfer Function (EOTF) defines how bits are converted into luminance out of the display. Gray levels (horizontal axis) represent the different shades from pure white (100% gray level) to pitch black (0% gray level). The standard for still images follows a 2.2 gamma. The flatter the curves, the harder it is to perceive differences between consecutive shades. This phenomenon is more frequent under intensive lighting conditions (20,000 lux) in the low gray level regions.
Luminance vs Viewing Angle
This graph presents how the luminance drops as viewing angles increase.


Skin-tone rendering in an indoor (1000 lux) environment
From left to right: Asus Zenfone 11 Ultra, Honor Magic6 Pro, Apple iPhone 15 Pro Max, Huawei Mate 60 Pro
(Photos for illustration only)


Skin-tone rendering in a sunlight (>90 000 lux) environment
From left to right: Asus Zenfone 11 Ultra, Honor Magic6 Pro, Apple iPhone 15 Pro Max, Huawei Mate 60 Pro
(Photos for illustration only)
Average Reflectance (SCI) Asus Zenfone 11 Ultra
4.7 %
Low
Good
Bad
High
Asus Zenfone 11 Ultra
Honor Magic6 Pro
Apple iPhone 15 Pro Max
Huawei Mate 60 Pro
SCI stands for Specular Component Included, which measures both the diffuse reflection and the specular reflection. Reflection from a simple glass sheet is around 4%, while it reaches about 6% for a plastic sheet. Although smartphones’ first surface is made of glass, their total reflection (without coating) is usually around 5% due to multiple reflections created by the complex optical stack.
Average reflectance is computed based on the spectral reflectance in the visible spectrum range (see graph below) and human spectral sensitivity.
Reflectance (SCI)
Wavelength (horizontal axis) defines light color, but also our capacity to see it; for example, UV is a very low wavelength that the human eye cannot see; Infrared is a high wavelength that the human eye also cannot see). White light is composed of all wavelengths between 400 nm and 700 nm, i.e. the range the human eye can see. Measurements above show the reflection of the devices within the visible spectrum range (400 nm to 700 nm).

Uniformity
This graph shows the distribution of luminance throughout the entire display panel. Uniformity is measured with a 20% gray pattern, with bright green indicating ideal luminance. An evenly spread-out bright green color on the screen indicates that the display’s brightness is uniform. Other colors indicate a loss of uniformity.
PWM Frequency Asus Zenfone 11 Ultra
480 Hz
Bad
Good
Bad
Great
Asus Zenfone 11 Ultra
Honor Magic6 Pro
Apple iPhone 15 Pro Max
Huawei Mate 60 Pro
Displays flicker for 2 main reasons: refresh rate and Pulse Width Modulation. Pulse width modulation is a modulation technique that generates variable-width pulses to represent the amplitude of an analog input signal. This measurement is important for comfort because flickering at low frequencies can be perceived by some individuals, and in the most extreme cases, can induce seizures. Some experiments show that discomfort can appear at a higher frequency. A high PWM frequency (>1500 Hz) tends to be less disturbing for users.
Temporal Light Modulation
This graph represents the frequencies of lighting variation; the highest peak gives the most important modulation. The combination of a low frequency and a high peak is susceptible to inducing eye fatigue.

Color

148

Asus Zenfone 11 Ultra

165

Google Pixel 8
How Display Color score is composed

Color evaluations are performed in different lighting conditions to see how well the device manages color with the surrounding environment. Devices are tested with sRGB and Display-P3 image patterns. Both faithful mode and default mode are used for our evaluation. Our measurements run in the labs are completed by perceptual testing & analysis.

White point color under D65 illuminant at 830 lux