A denser version of the shared Ultra canvas
Because the same resolution occupies a smaller panel than on its successor, rendered CSS geometry stays fixed while the physical size of details changes.
Galaxy S24 Ultra screen size
Galaxy S24 Ultra: 6.8″, 1440 × 3120, 505 PPI, 384 × 832 CSS viewport at DPR 3.75. It uses the same CSS canvas and pixel grid as the following Ultra while fitting that grid into a smaller physical diagonal, separating physical density changes from web layout changes.
To proportion
6.8″
- Display size
- 6.8″ (17.3 cm) diagonalofficial
- Resolution
- 1440 × 3120 pxofficial
- Pixel density
- 505 PPIofficial
- Aspect ratio
- 19.5:9calculated
- Physical size (display)
- 2.85″ × 6.17″ (7.2 × 15.7 cm)calculated
- CSS viewport
- 384 × 832 pxreference
- Device pixel ratio
- 3.75reference
- Release year
- 2024
Model-specific guidance
What this means
Physical inspection still has value
Matching browser screenshots cannot show the difference in real-world text and control size, so device testing remains relevant even when viewport automation is identical.
The base model is the compression check
This Ultra gives layouts more horizontal room than its same-generation base model and may conceal wrapping or fixed-width assumptions.
Compare this device
The specifications below come from the device records; the notes explain why each comparison is useful.
| Device configuration | Matched to | Screen | Panel | Viewport / workspace | PPI |
|---|---|---|---|---|---|
| Galaxy S24 Ultra Current page | Galaxy S24 Ultra | 6.8″ | 1440 × 3120 | 384 × 832 | 505 |
| Galaxy S25 Ultra The next Ultra keeps the same resolution and CSS reference on a different panel diagonal, making physical scale the meaningful distinction. | Galaxy S24 Ultra | 6.9″ | 1440 × 3120 | 384 × 832 | 498 |
| Galaxy S24 The base model is the complementary compact target for testing navigation, forms and card grids under tighter space. | Galaxy S24 Ultra | 6.2″ | 1080 × 2340 | 360 × 780 | 416 |
For developers
For developers
/* Galaxy S24 Ultra — portrait reference, not a breakpoint */
viewport: 384 × 832 CSS px
panel: 1440 × 3120 · DPR 3.75
/* Test immediately below and above your layout breakpoints. */Tailwind breakpoint
base
0px-639px
Bootstrap breakpoint
xs
0px-575px
Image slot example
1536 × 864
384px wide at DPR 3.75
Responsive testing plan
Galaxy S24 Ultra responsive workflow
Use the 384 × 832 CSS px at DPR 3.75 as a real QA target, then pair it with nearby widths for regression testing.
Model-specific checks
- Compare on-device legibility with the successor instead of relying only on identical browser screenshots.
- Repeat overflow-prone flows on the base Galaxy before approving the responsive range.
Phones with a similar screen size
Devices with a similar viewport
Devices with a similar DPR
Sources and review dates
Values marked official come from manufacturer specifications; calculated values are derived from them; reference values are developer layout references and can vary with browser, zoom and operating-system settings.
Sources: Samsung · Samsung · Facts reviewed 2026-09-16
Content reviewed 2026-09-16
Related tools
- Device Screen SizesBrowse sourced screen sizes, resolutions, CSS viewports, DPR and PPI for phones, tablets and laptops, with links to model-level specifications.
- Phone Screen SizesPhone screen size chart with display inches, resolution, PPI and aspect ratio; viewport references where available for tracked iPhone, Galaxy and Pixel phones, including foldables.
- Screen Size ComparisonCompare display dimensions, complete video pictures and A4 page size. View screens side by side or estimate physical size after calibration.
- Viewport Size CheckerSee your browser's CSS viewport size and window size live. Updates as you resize — with current responsive breakpoint for developers.
- Responsive Breakpoint CheckerCheck the current responsive breakpoint live, compare Tailwind and Bootstrap defaults, and copy media queries for common viewport widths.
- Responsive Image CalculatorCalculate responsive image export sizes from CSS pixels and DPR. Generate srcset, sizes and CSS image-set snippets for crisp images.
- PPI CalculatorCalculate PPI from resolution and screen size. Instant results with the formula worked through your numbers, plus physical dimensions and dot pitch.