Native resolution 1080 × 2400 px at 3× · 421 PPI · 6.2″ · 9:20. Design at 360 × 800 and export assets at 3×.
| Property | Value |
|---|---|
| CSS viewport (portrait) | 360 × 800 px |
| CSS viewport (landscape) | 800 × 360 px |
| Native resolution | 1080 × 2400 px |
| Device pixel ratio | 3× |
| Pixel density | 421 PPI |
| Screen diagonal | 6.2 in |
| Panel size | 2.57 × 5.7 in |
| Aspect ratio | 9:20 |
| Total pixels | 2.59 MP |
| Released | 2021 |
| Operating system | Android |
Among the 130 phones on this site, the Samsung Galaxy S21 has the 94th largest CSS viewport area. Its 360 px width is 39 px below the 399 px average for this category.
Targeting the Samsung Galaxy S21 in CSS
Device-specific media queries are brittle — a new model with the same width will not match. Use them for genuine per-device fixes only, and prefer width buckets for layout.
/* Target Samsung Galaxy S21 specifically */
@media only screen
and (device-width: 360px)
and (device-height: 800px)
and (-webkit-device-pixel-ratio: 3) {
/* … */
}
/* More useful in practice — the width bucket it falls into */
@media (min-width: 360px) { /* … */ }Compare with other Android Phones models
| Device | CSS viewport | Native | DPR | PPI | Diagonal |
|---|---|---|---|---|---|
| Samsung Galaxy S21 | 360 × 800 | 1080 × 2400 | 3× | 421 | 6.2″ |
| Google Pixel 6 | 412 × 915 | 1080 × 2400 | 2.625× | 411 | 6.4″ |
| Samsung Galaxy A52 | 360 × 800 | 1080 × 2400 | 3× | 405 | 6.5″ |
| Samsung Galaxy S21+ | 384 × 854 | 1080 × 2400 | 2.81× | 394 | 6.7″ |
| Google Pixel 6 Pro | 412 × 892 | 1440 × 3120 | 3.5× | 512 | 6.7″ |
| Samsung Galaxy S21 Ultra | 480 × 1067 | 1440 × 3200 | 3× | 515 | 6.8″ |
| Samsung Galaxy S20 | 360 × 800 | 1440 × 3200 | 4× | 563 | 6.2″ |
| Google Pixel 7 | 412 × 915 | 1080 × 2400 | 2.625× | 416 | 6.3″ |
| Samsung Galaxy S22 | 360 × 780 | 1080 × 2340 | 3× | 425 | 6.1″ |
Questions about the Samsung Galaxy S21 screen
What is the screen size of the Samsung Galaxy S21?
The Samsung Galaxy S21 has a 6.2-inch display. In CSS the viewport measures 360 × 800 px in portrait, and the panel itself has 1080 × 2400 physical pixels at 421 PPI.
What resolution should I design for on the Samsung Galaxy S21?
Design at 360 × 800 and export assets at 3×. That gives you 1080 × 2400 px images, which is exactly what the panel renders. Designing directly at 1080 × 2400 means every measurement is 3 times larger than the CSS values you will write.
What is the device pixel ratio of the Samsung Galaxy S21?
The Samsung Galaxy S21 reports a device pixel ratio of 3. One CSS pixel therefore covers 9 device pixels. You can read it in JavaScript with window.devicePixelRatio.
Which other devices have the same viewport as the Samsung Galaxy S21?
4 other devices share the 360 × 800 CSS viewport: Samsung Galaxy S20, Samsung Galaxy A53 5G, Samsung Galaxy A52, Xiaomi Redmi 13C. A layout that works on one works on all of them.
Related
window.innerWidth/innerHeight reported by the stock browser with no browser chrome. See methodology and sources.