We subjected the Samsung Galaxy Z Flip4 to our rigorous SBMARK Display test suite to measure its performance Cons six criteria. In this test roundup, we’ll break down how it fared across a variety of tests and several common use cases.
Overview
Main display specifications:
- 6.7 inches AMOLED Dynamic 2X, (~ 86.9% screen-to-body ratio)
- Dimensions: 84.9 x 71.9 x 15.9 mm (3.34 x 2.83 x 0.63 inches)
- Resolution: 1080 x 2640 pixels, (~ 426 ppi density)
- Proportions: 22: 9
- Refresh rate: 120Hz
Pros
- A good yield for HDR10 video content, thanks to adequate brightness and good color fidelity
- Good smoothness in any use case
- The overall color rendering is good.
versus
- In sunlight, the high brightness mode gives an unnatural look to colored content
- The brightness is too high for comfortable reading at night when the blue light filter is turned off.
- Image details are difficult to read when viewed indoors.
Like the Z Flip3 5G, the fold of the Z Flip4 is visible. And as with the Samsung Galaxy S22 series phones, the Z Flip4 enhances its colors in the sunlight, resulting in the color content appearing flat and unnatural. Aside from sunlight, the Z Flip4 offers good color performance in all other ambient lights tested. The Z Flip4 has very color stable angular rendering, which means that color differences on both sides of the screen are minimized; you will only see a difference at important angles.
While readability is generally quite good, darker details in images are difficult to see when viewed indoors and the screen can be dim when reading at night without using the blue light filter.
Test summary
Learn about SBMARK visualization tests: For scoring and analysis in our smartphone and other display reviews, SBMARK engineers perform a series of objective and perceptual tests in controlled laboratory and under real-life conditions. Please note that we evaluate display attributes using only the device’s built-in display hardware and related still image (gallery) and video apps with default settings. (For in-depth information on how we rate smartphones and other displays, see our articles, “How SBMARK Tests Display Quality” and “A Closer Look at SBMARK Display Tests”.
The following section collects the key elements of our exhaustive tests and analyzes performed in SBMARK laboratories. Detailed performance evaluations in the form of reports are available upon request. Do not hesitate to contact us.
How the screen readability score is composed
Readability evaluates the ease and comfort with which users can read stationary content (photos and web) on the display in various real-life conditions. SBMARK 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 carried out in real-life environments.
Readability indoors (1000 lux).
From left: Samsung Galaxy Z Flip4, Samsung Galaxy Z Flip 3, OnePlus 10 Pro, Apple iPhone 13 Pro Max
(Photo for illustrative purposes only)
Readability in a sunlight environment (> 90 0000 lux).
From left: Samsung Galaxy Z Flip4, Samsung Galaxy Z Flip 3, OnePlus 10 Pro, Apple iPhone 13 Pro Max
(Photo for illustrative purposes only)
Measurement of luminance uniformity
This graph shows the uniformity of the display with a gray pattern of 20%. The more green the color is visible, the smoother the display.
How the Display Color score is composed
The color attribute evaluates the device’s ability to accurately reproduce colors. The measurements made are for fidelity, white point color and gamma coverage. We perform color assessments for different lighting conditions to see how well the device can handle color in its surroundings. Colors are measured using a spectrophotometer in a controlled lighting environment. The perceptual analysis of the color rendering is compared to the reference model displayed on a calibrated professional monitor.
White point under illuminant D65 at 1000 lux
Color fidelity measurements
Samsung Galaxy Z Flip4, 1000 lux color fidelity in the sRGB color space
Samsung Galaxy Z Flip4, 1000 lux color fidelity in the DCI-P3 color space
Each arrow represents the color difference between a target color model (arrow base) and its actual measurement (arrowhead). The longer the arrow, the more visible the color difference. If the arrow stays inside the circle, the color difference will only be visible to trained eyes.
Behavior of the color on the corner
This graph shows the shift of color when the screen is tilted. Each point represents a measurement with a particular angle. The points inside the inner circle show no color change in the corner; those between the inner and outer circle have shifts that only trained experts will see; but those who fall outside the outer circle are noted.
How the Display Video score is composed
Our video attribute evaluates the Standard Dynamic Range (SDR) and High Dynamic Range (HDR10) video handling of each device indoors and in low light conditions. We measure the tone mapping, color gamut, brightness and contrast of the display. We perform perceptual analysis Cons our professional reference monitor (Sony BVM-HX310) to ensure that the rendering respects the artistic intent.
Video rendering in a low light environment (0 lux).
Clockwise from top left: Samsung Galaxy Z Flip4, Samsung Galaxy Z Flip 3, OnePlus 10 Pro, Apple iPhone 13 Pro Max
(Photo for illustrative purposes only)
Range coverage for video content
Primary colors are measured in both 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 main color space of each video.
How the score of Display Motion is composed
The motion attribute evaluates the handling of dynamic content. Frame drops, motion blur, and playback artifacts are investigated using games and videos.
The video frame drops
These long exposure photos present the number of frame irregularities in a 30 second video. A good performance shows a regular pattern (a flat gray image or a drop-down pattern).
How the Display Touch score is composed
To evaluate touch, SBMARK uses a touch robot and a high-speed camera to reproduce and record a series of scenarios for the evaluation of fluidity, accuracy and response time.
This response time test accurately evaluates the time elapsed between a single tap of the robot on the screen and the action displayed. This test is applied to activities that require high responsiveness, such as play.
How the Display Artifacts score is composed
Evaluating artifacts means checking performance, image rendering, and motion defects that can affect the end-user experience. SBMARK accurately measures device reflectance and the presence of flickering and evaluates the impact of residual aliasing when playing video games, among other characteristics.
The Z Flip4’s low artifact score is not only due to its flickering and visible crease, but also to its behavior when viewed through polarized sunglasses, as shown below.
Alias (foreground)
Samsung Galaxy Z Flip4
(Photo for illustrative purposes only)
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