CSS viewport reference
- Samsung Galaxy S24
- 360 × 780 CSS px
- Samsung Galaxy S24 Ultra
- 480 × 1067 CSS px
Phone and foldable comparisons
Samsung Galaxy S24 vs S24 Ultra Screen Comparison
Compare Samsung Galaxy S24 and S24 Ultra viewport references for Android responsive design and QA testing.
Reviewed by ScreenMetricLab Editorial Team
Updated 2026-09-20
At a glance
Measured screen and viewport differences
Values combine reference display records and calculated geometry. Rounded corners, cutouts, hinges, browser UI, and device modes can change the usable area.
Physical resolution
- Samsung Galaxy S24
- 1,080 × 2,340 px
- Samsung Galaxy S24 Ultra
- 1,440 × 3,120 px
Diagonal
- Samsung Galaxy S24
- 6.2 inches
- Samsung Galaxy S24 Ultra
- 6.8 inches
Calculated panel size
- Samsung Galaxy S24
- 5.6 × 2.6 inches
- Samsung Galaxy S24 Ultra
- 6.2 × 2.8 inches
Calculated screen area
- Samsung Galaxy S24
- 14.6 square inches
- Samsung Galaxy S24 Ultra
- 17.6 square inches
Pixel density
- Samsung Galaxy S24
- 416 PPI
- Samsung Galaxy S24 Ultra
- 505 PPI
Aspect ratio
- Samsung Galaxy S24
- 19.5:9
- Samsung Galaxy S24 Ultra
- 19.5:9
Device pixel ratio
- Samsung Galaxy S24
- DPR 3
- Samsung Galaxy S24 Ultra
- DPR 3
Decision guide
Choose the screen that fits the task
Compact flagship geometry and narrow-layout testing. By contrast, Larger, denser flagship display for media and productivity. Do not treat native resolution as the CSS viewport on either phone.
Choose Samsung Galaxy S24 when
- Compact flagship geometry and narrow-layout testing.
- People whose space, workflow or test coverage is better represented by Samsung Galaxy S24 Screen Size.
Choose Samsung Galaxy S24 Ultra when
- Larger, denser flagship display for media and productivity.
- People whose space, workflow or test coverage is better represented by Samsung Galaxy S24 Ultra Screen Size.
Visual comparison
Compare screen shapes
Compare physical screen proportions and native pixel grids, or switch to CSS viewport references for responsive-layout work. Every drawing uses one shared scale so the relative size remains meaningful.
Left device
Right device
CSS viewport comparison
Compare two devices to see the relative area.
—
Samsung Galaxy S24
Android · DPR 3 · 416 PPI
—
Samsung Galaxy S24 Ultra
Android · DPR 3 · 505 PPI
Proportional comparison of Samsung Galaxy S24 and Samsung Galaxy S24 Ultra using physical screen dimensions, CSS viewport references, or native pixel grids.
Decision factors
What materially changes between these displays?
Primary advantage
- Samsung Galaxy S24
- Compact flagship geometry and narrow-layout testing
- Samsung Galaxy S24 Ultra
- Larger, denser flagship display for media and productivity
Do not treat native resolution as the CSS viewport on either phone.
Responsive-testing role
- Samsung Galaxy S24
- Use Samsung Galaxy S24 Screen Size as one documented layout scenario
- Samsung Galaxy S24 Ultra
- Use Samsung Galaxy S24 Ultra Screen Size as a distinct adjacent scenario
Test real content and neighboring widths; neither record is a universal breakpoint or a substitute for a measured browser state.
Measurement boundary
- Samsung Galaxy S24
- Keep native pixels, CSS viewport and physical size separate
- Samsung Galaxy S24 Ultra
- Keep native pixels, CSS viewport and physical size separate
Window size, zoom, operating-system scaling, browser controls and accessibility settings can change usable webpage space.
Scenario matrix
Which option wins for common use cases?
A winner applies only to the stated task. Read the limitation before treating it as a complete product recommendation.
Priority matches the first option
- Recommended
- Samsung Galaxy S24 Screen Size
- Why
- Compact flagship geometry and narrow-layout testing.
- Limitation
- Confirm product-specific ergonomics, performance and live viewport behavior separately.
Priority matches the second option
- Recommended
- Samsung Galaxy S24 Ultra Screen Size
- Why
- Larger, denser flagship display for media and productivity.
- Limitation
- The larger or denser reference is not automatically better for every space or task.
Responsive QA coverage
- Recommended
- Test both references
- Why
- The pair exposes different layout pressures and helps prevent optimization around a single width.
- Limitation
- Emulation checks geometry only; important journeys still need representative browsers and input methods.
Practical considerations
What should you verify before deciding?
- Do not treat native resolution as the CSS viewport on either phone.
- Compare CSS viewport values for layout work and native pixels for hardware or media context; do not use them interchangeably.
- Record browser, operating system, scaling, zoom, orientation and window state when a comparison informs release QA.
- For a purchase, verify exact model dimensions, ergonomics, ports, performance, warranty and accessibility needs separately.
Methodology and sources
Calculation method and evidence
Physical dimensions are calculated from diagonal and aspect ratio. Named-product hardware claims use manufacturer specifications; CSS viewports remain practical browser references.
How the geometry is calculated
Width and height divide the diagonal using the stated aspect ratio. Screen area is width × height, and PPI divides the diagonal pixel count by the diagonal inches.
First-party calculation and editorial methodChecked 2026-09-20
ScreenMetricLab display calculation and review methodology
Calculated geometry, normalized comparison fields, source hierarchy and interpretation limits.
Reviewed ScreenMetricLab recordChecked 2026-09-20
Samsung Galaxy S24 Screen Size reviewed device record
Left-side hardware facts, calculation basis, source link and viewport limitations.
Reviewed ScreenMetricLab recordChecked 2026-09-20
Samsung Galaxy S24 Ultra Screen Size reviewed device record
Right-side hardware facts, calculation basis, source link and viewport limitations.
Reviewed under the ScreenMetricLab methodology and editorial policy. Reference values are not a substitute for checking the exact model, browser, scaling, and accessibility settings you will use.
Frequently asked questions
Questions about this comparison
Does Galaxy S24 Ultra have a larger viewport?
In this reference set, yes. It also has a higher physical resolution and larger diagonal size.
Should I test Samsung separately from Pixel?
Yes. Samsung devices are common and can have different viewport, scaling, and browser behavior.
Does the Ultra model require different design?
Usually not a separate design, but it should be checked for spacing, readability, and screenshot consistency.
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