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Samsung Galaxy S24 Ultra
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Samsung Galaxy S24 Ultra Display test

OTHER AVAILABLE TESTS FOR THIS DEVICE

We put the Samsung Galaxy S24 Ultra through our rigorous DXOMARK Display test suite to measure its performance across six 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:

  • 6.8 inches Dynamic AMOLED 2X (~88.9% screen-to-body ratio)
  • Dimensions: 162.3 x 79.0 x 8.6 mm (6.39 x 3.11 x 0.34 inches)
  • Resolution: 1440 x 3120 pixels, (~505 ppi density)
  • Aspect ratio: 19.5:9
  • Refresh rate: 120 Hz

Scoring

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

Samsung Galaxy S24 Ultra Samsung Galaxy S24 Ultra
155
display
161

163

148

164

152

162

156

Best

162

170

148

163

Pros

  • Good readability under sunlight thanks to a very high peak brightness
  • Improved management of screen reflections, thanks to advanced glass technology
  • Accurate color rendering  in most lighting environments
  • Excellent management of frame mismatches when watching all types of videos or playing video games

Cons

  • Excessively high brightness levels in video performance
  • Lack of brightness and details in indoor lighting environment
  • Poor management of involuntary touches

The Samsung Galaxy S24 Ultra’s screen performance earned the flagship device the overall top spot in our Display protocol ranking, thanks to the marked improvements in nearly all attributes, particularly over its predecessor the S23 Ultra.

In readability, the S24 Ultra was just shy of achieving the top score with its impressive performance in challenging environments. In our tests under bright sunlight, the device achieved a measured peak brightness of 2572 nits (close to the 2600 advertised), which is significantly above the Galaxy S23 Ultra’s 1750 nits. Moreover, the addition of an anti-reflective glass serves to deepen contrast to make the images more vivid in challenging conditions. These combined performances mean that in direct sunlight, it’s not necessary to find a shaded area or to cover the screen with one’s hand to be able to see and read what is on the display. While performance was great outdoors, the screen’s brightness could be a little imprecise in other conditions: our testing results showed that screen brightness sometimes could be too high at night and too low in indoor environments.

The Samsung Galaxy S24 Ultra’s color fidelity and rendering were much better than the S23 Ultra’s, particularly outdoors where the S24 Ultra corrected the lack of color shades of its predecessor, but still came in a bit behind the top score. Also, viewing the screen at an angle would show a slight shift to pink and green.

Motion performance garnered a top score for S24 Ultra because of the excellent way it managed frame mismatches when playing videos. Additionally, the display would adapt its refresh rate to that of the video frame rate, thus avoiding judder.

The S24 Ultra should have provided a very similar video experience as its predecessor, but that was not the case. The S24 Ultra was unable to achieve the S23 Ultra’s top-scoring performance in video mainly because the screen was too bright to view the content comfortably under a low-light environment.

The device’s redesigned edged display probably contributed to improvements over the S23 Ultra in terms of touch interactions and accuracy, although there were occasions of unintentional touches when playing video games. Scrolling the web and viewing the gallery were overall smooth experiences. Touch reactivity also quickened slightly over the S23 Ultra, which was already quite good.

Test summary

About DXOMARK Display tests: For scoring and analysis in our smartphone and other display reviews, DXOMARK engineers perform a variety of objective and perceptual tests under controlled lab and real-life conditions. Note that we evaluate display attributes using only the device’s built-in display hardware and its still image (gallery) and video apps at their default settings. (For in-depth information about how we evaluate smartphone and other displays, check out our articles, “How DXOMARK tests display quality” and “A closer look at DXOMARK Display testing.

The following section gathers key elements of our exhaustive tests and analyses performed in DXOMARK laboratories. Detailed performance evaluations under the form of reports are available upon request. Do not hesitate to contact us.

Readability

161

Samsung Galaxy S24 Ultra

163

Samsung Galaxy S24+
How Display Readability score is composed

Readability evaluates how easily and comfortably users can read still content (photos & web) on the display under different real-life conditions. DXOMARK uses its Display Bench to recreate ambient light conditions ranging from total darkness to bright sunlight. In addition to laboratory tests, perceptual analysis is also made in real-life environments.

Luminance under various lighting conditions


Readability in an indoor (1000 lux) environment
From left to right: Samsung Galaxy S24 Ultra, Samsung Galaxy S23 Ultra, Apple iPhone 15 Pro Max, Google Pixel 8 Pro
(Photos for illustration only)


Readability in an outdoor (20 000 lux) environment
From left to right: Samsung Galaxy S24 Ultra, Samsung Galaxy S23 Ultra, Apple iPhone 15 Pro Max, Google Pixel 8 Pro
(Photos for illustration only)


Readability in a sunlight (>90 000 lux) environment
From left to right: Samsung Galaxy S24 Ultra, Samsung Galaxy S23 Ultra, Apple iPhone 15 Pro Max, Google Pixel 8 Pro
(Photos for illustration only)


Readability at a 45° angle

From left to right: Samsung Galaxy S24 Ultra, Samsung Galaxy S23 Ultra, Apple iPhone 15 Pro Max, Google Pixel 8 Pro
(Photos for illustration only)

Luminance uniformity measurement
This graph shows the uniformity of the display with a 20% gray pattern. The more visible the green color, the more uniform the display.

Color

148

Samsung Galaxy S24 Ultra

164

Google Pixel 8 Pro
How Display Color score is composed

The color attribute evaluates the capacity of the device to accurately reproduce colors. The measurements taken are for fidelity, white point color, and gamut coverage. We perform color evaluations for different lighting conditions to see how well the device can manage color in the surrounding environment. Colors are measured using a spectrophotometer in a controlled lighting environment. Perceptual analysis of color rendering is against the reference pattern displayed on a calibrated professional monitor.

White point under D65 illuminant at 1000 lux


Color rendering indoors (1000 lux)
Clockwise from top left: Samsung Galaxy S24 Ultra, Samsung Galaxy S23 Ultra, Apple iPhone 15 Pro Max, Google Pixel 8 Pro
(Photos for illustration only)


Color rendering outdoors (20 000 lux)
Clockwise from top left: Samsung Galaxy S24 Ultra, Samsung Galaxy S23 Ultra, Apple iPhone 15 Pro Max, Google Pixel 8 Pro
(Photos for illustration only)


Color rendering in sunlight (>90 000 lux)
Clockwise from top left: Samsung Galaxy S24 Ultra, Samsung Galaxy S23 Ultra, Apple iPhone 15 Pro Max, Google Pixel 8 Pro
(Photos for illustration only)
Color fidelity measurements
Samsung Galaxy S24 Ultra, color fidelity at 1000 lux in the sRGB color space
Samsung Galaxy S24 Ultra, color fidelity at 1000 lux in the Display-P3 color space
Each arrow represents the color difference between a target color pattern (base of the arrow) and its actual measurement (tip of the arrow). The longer the arrow, the more visible the color difference is. If the arrow stays within the circle, the color difference will be visible only to trained eyes.
Color behavior on angle
This graph shows the color shift when the screen is at an angle. Each dot represents a measurement at a particular angle. Dots inside the inner circle exhibit no color shift in angle; those between the inner and outer circle have shifts that only trained experts will see; but those falling outside the outer circle are noticeable.


Color shift on angle

From left to right: Samsung Galaxy S24 Ultra, Samsung Galaxy S23 Ultra, Apple iPhone 15 Pro Max, Google Pixel 8 Pro
(Photos for illustration only)

Video

152

Samsung Galaxy S24 Ultra

162

Samsung Galaxy S23 (Snapdragon)
How Display Video score is composed

Our video attribute evaluates the Standard Dynamic Range (SDR) and High Dynamic Range (HDR10) video handling of each device in indoor and low-light conditions. We measure tone mapping, color gamut, brightness and contrast of the display. We perform perceptual analysis against our professional reference monitor (Sony BVM-HX310) to ensure that the rendering respects the artistic intent.

Video brightness at 10% APL in the dark ( < 5 lux)
Video rendering in a low-light (0 lux) environment
Clockwise from top left: Samsung Galaxy S24 Ultra, Samsung Galaxy S23 Ultra, Apple iPhone 15 Pro Max, Google Pixel 8 Pro
(Photos for illustration only)
Clockwise from top left: Samsung Galaxy S24 Ultra, Samsung Galaxy S23 Ultra, Apple iPhone 15 Pro Max, Google Pixel 8 Pro
(Photos for illustration only)
Gamut coverage for video content
HDR10 Gamut coverage
SDR Gamut coverage
The primary colors are measured both in HDR10 and SDR. The extracted color gamut shows the extent of the color area that the device can render. To respect the artistic intent, the measured gamut should match the master color space of each video.

Motion

156

Samsung Galaxy S24 Ultra

Best

How Display Motion score is composed

The motion attribute evaluates the handling of dynamic contents. Frame drops, motion blur, and playback artifacts are scrutinized using games and videos.


Video frame drops
30 fps content
60 fps content
These long exposure photos present the number of frame irregularities in a 30-second video. A good performance shows a regular pattern (either a flat gray image or a pull-down pattern).

Touch

162

Samsung Galaxy S24 Ultra

170

Samsung Galaxy S24+
How Display Touch score is composed

To evaluate touch, DXOMARK uses a touch robot and a high-speed camera to play and record a set of scenarios for smoothness, accuracy and response-time evaluation.

Average Touch Response Time Samsung Galaxy S24 Ultra
63 ms
Fast
Good
Bad
Slow
This response time test evaluates precisely the time elapsed between a single touch of the robot on the screen and the displayed action. This test is applied to activities that require a high reactivity, such as gaming.

Artifacts

148

Samsung Galaxy S24 Ultra

163

OnePlus Open
How Display Artifacts score is composed

Evaluating artifacts means checking for the performance, image rendering and motion flaws that can affect the end-user experience. DXOMARK measures precisely the device’s reflectance and the presence of flicker, and assesses the impact of residual aliasing when playing video games, among other characteristics.

Average Reflectance (SCI) Samsung Galaxy S24 Ultra
1.5 %
Low
Good
Bad
High
Reflectance (SCI)
Measurements above show the reflection of the device within the visible spectrum range (400 nm to 700 nm). It includes both diffuse and specular reflection.
Flicker Frequency Samsung Galaxy S24 Ultra
480 Hz
Bad
Good
Bad
Great
Temporal Light Modulation
This graph represents the frequencies of lighting variation; the highest peak gives the main flicker frequency.
Aliasing (closeup)
Samsung Galaxy S24 Ultra
(Photos for illustration only)

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