Samsung · Galaxy S
Galaxy S21 Ultra Screen Size
The Galaxy S21 Ultra features a 6.8 inches Dynamic AMOLED 2X display with a resolution of 3200 × 1440 (3200 × 1440 pixels), delivering 515 PPI pixel density. Released in 2021, this phone offers 120Hz LTPO refresh rate and peak brightness of 1500 nits peak.
Actual Size
Device outline scaled to relative proportions using physical dimensions.
75.6 × 165.1 mm
Display DNA
A fingerprint of the Galaxy S21 Ultra's display characteristics — screen size, panel type, refresh rate, pixel density, and brightness combined into a unique profile.
6 of 7 display traits active
Computed Display Data
Derived measurements calculated from the Galaxy S21 Ultra's physical dimensions and resolution — unique values not found on standard spec sheets.
Display Rankings
Where this device ranks among all phones in our database.
How Big Is 6.8 inches?
The Galaxy S21 Ultra's 6.8" screen compared to everyday objects by diagonal length.
Galaxy S21 Ultra Screen Resolution & Display Specifications
The Galaxy S21 Ultra's screen measures 6.8 inches (17.3cm) diagonally, with physical dimensions of 2.97 inches (75.6mm) wide by 6.50 inches (165.1mm) tall. The Dynamic AMOLED 2X panel technology ensures vibrant colors with 24-bit color depth and a 20:9 aspect ratio, making it ideal for mobile content consumption and photography.
With its 120Hz LTPO display, the Galaxy S21 Ultra provides exceptionally smooth scrolling and responsive touch interactions. This high refresh rate technology is particularly beneficial for gaming, video playback, and everyday scrolling.
Screen Size | 6.8 inches |
Resolution | 3200 × 1440 |
Pixel Density | 515 PPI |
Display Type | Dynamic AMOLED 2X |
Aspect Ratio | 20:9 |
Color Depth | 24-bit |
Refresh Rate | 120Hz LTPO |
Brightness | 1500 nits peak |
Galaxy S21 Ultra Screen Dimensions
At 515 PPI, the Galaxy S21 Ultra delivers sharp, crisp text and images. The total pixel count of 4,608,000 pixels (3200 × 1440) ensures high-definition content rendering. This resolution is well-suited for 4K content and professional work.
For mobile users, the 6.8 inches screen size strikes a balance between immersive viewing and manageable one-handed use. The 20:9 aspect ratio is optimized for modern app interfaces and video content.
Width | 2.97 inches (75.6mm) |
Height | 6.50 inches (165.1mm) |
Diagonal | 6.8 inches (17.3cm) |
Total Pixels | 4,608,000 |
More devices to compare
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Approximate CSS viewport dimensions for responsive development. Values are derived from native resolution and estimated device pixel ratio.
480 × 1067@media (max-width: 480px)max-w-[480px]Frequently asked questions
- Is the Galaxy S21 Ultra bigger than the Galaxy S20 Ultra?
- The Galaxy S21 Ultra has a smaller screen than (6.8 inches vs 6.9 inches) the Galaxy S20 Ultra.
- Which phones have the same screen size as the Galaxy S21 Ultra?
- Devices with a similar 6.8 inches display include Pixel 11 Pro XL, POCO F7, iPhone 16 Plus, Redmi 13.
- Is 515 PPI noticeable on the Galaxy S21 Ultra?
- The Galaxy S21 Ultra's pixel density is sharper than average (515 PPI vs ~500 PPI median) for Galaxy S devices. Above 400 PPI, individual pixels are difficult to discern at normal viewing distance.
- Can I use the Galaxy S21 Ultra one-handed?
- With a body width of 75.6 mm, the Galaxy S21 Ultra rates 3/5 for one-handed use (Moderate). Phones under 72 mm wide are generally comfortable for one-handed operation.
- How does the Galaxy S21 Ultra compare to the Pixel 11 Pro XL?
- Both have similar screen sizes (6.8 inches vs 6.8 inches). The Galaxy S21 Ultra offers 3200 × 1440 at 515 PPI, while the Pixel 11 Pro XL has 2992 × 1344 at 486 PPI.
Keep exploring
Tools and guides for screen size, pixel density, and display specs.
Tools
- Viewport CheckerLive CSS viewport and safe-area values
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- Breakpoint CheckerTest width against Tailwind tiers
- Media Query GeneratorGenerate @media CSS snippets
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- Aspect Ratio GeneratorConvert aspect ratios