Samsung Galaxy S20+: CSS viewport of 384 × 854 px, resolution and responsive test

Samsung · Android 10.0 · Smartphone · 2020

Samsung Galaxy S20+, smartphone Samsung from 2020, displays a CSS viewport of 384 x 854 pixels. Below, find its 3.75x density, ready-to-copy media queries, and how to test your site on it without buying the device.

Test your site on Samsung Galaxy S20+ directly in your browser, without buying the device.

  • Over 70 devices included, including a model with the same format
  • Real viewport, User-Agent, and touch events
  • Also works on localhost and in pre-production
  • Exportable screenshots and videos
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Why test your site on Samsung Galaxy S20+?

3.75x density

Each CSS pixel of Samsung Galaxy S20+ is rendered by 3.75 physical pixels. Any image, icon, or font provided in simple resolution appears immediately blurry.

Very elongated screen

With a ratio of 20:9, Samsung Galaxy S20+ displays a lot of height for little width. Sections designed in landscape become endless columns, and full-screen visuals are poorly cropped.

Actual media queries

The 384 x 854 pixels viewport of Samsung Galaxy S20+ rarely matches the round breakpoints of frameworks. It is precisely between these values that layouts break.

CSS viewport resolution of Samsung Galaxy S20+

This is the width your CSS considers. All your breakpoints and media queries compare to this value, not the number of physical pixels on the panel.

  • 384 pixels in width
  • 854 pixels in height

The height remains indicative: Safari, Chrome, and other mobile browsers reduce the visible area with their address bar, which folds on scroll.

Be cautious when analyzing your statistics: some tools only report the manufacturer resolution, never the CSS viewport presented here.

Pixel density of Samsung Galaxy S20+

3.75

The device pixel ratio of Samsung Galaxy S20+ is 3.75.

Your images should therefore be exported 3.75 times larger than their display size, otherwise they will appear softened on this screen.

Manufacturer resolution of Samsung Galaxy S20+

This is the actual number of pixels on the panel. This value does not affect your layouts, but it's the one reported by technical specifications and most analytics tools.

  • 1440 pixels in width
  • 3200 pixels in height
  • 20:9 Screen ratio

525 pixels per inch (ppi) · 6.7 inches diagonal, or 17 cm

Media queries and code snippets for Samsung Galaxy S20+

These snippets are generated from the exact characteristics of Samsung Galaxy S20+. Copy them directly into your stylesheet or configuration.

CSS media query

Targets screens whose width matches that of Samsung Galaxy S20+ and models of the same format.

@media only screen and (min-width: 384px) and (max-width: 853px) {
  /* Samsung Galaxy S20+ */
}

Density media query

Serves high-resolution images to screens of at least 3.75x.

@media only screen and (-webkit-min-device-pixel-ratio: 3.75),
       only screen and (min-resolution: 360dpi) {
  /* High-density images and icons */
}

Tailwind configuration

Adds a named breakpoint at the exact width of Samsung Galaxy S20+.

// tailwind.config.js
module.exports = {
  theme: {
    screens: {
      'samsung-galaxy-s20-plus': '384px'
    }
  }
}

JavaScript detection

Detects format and density client-side.

const isDeviceWidth = window.matchMedia('(min-width: 384px)').matches;
const isHighDensity = window.devicePixelRatio >= 3.75;

Meta viewport tag

Essential for Samsung Galaxy S20+ to use its CSS viewport and not a simulated width of 980 pixels.

<meta name="viewport" content="width=device-width, initial-scale=1">

Free Samsung Galaxy S20+ simulator

Mobile FIRST does not yet include Samsung Galaxy S20+, but a model with the same format is available. You can already validate your breakpoints and display density.

This is where the difference with Chrome DevTools' responsive mode is seen: DevTools resizes a window, the extension replicates the device's browser and allows exporting shareable screenshots and videos.

  1. 01 Install the extension Add Mobile FIRST to Chrome, Firefox, or Edge. Installation is free and requires no account.
  2. 02 Open the page to test Go to the URL to check, including a local address like localhost:3000.
  3. 03 Choose Samsung Galaxy S20+ Select Samsung Galaxy S20+ from the list of devices. The viewport switches to 384 x 854 pixels, and the mobile User-Agent is applied.
  4. 04 Check rendering Scroll, change orientation, test your forms, then capture an image or video to share.

Comparison with similar models

The neighboring formats of Samsung Galaxy S20+ are the ones to test right after, as they reveal poorly placed breakpoints.

Comparison of resolutions of Samsung Galaxy S20+ and nearby models
Model CSS Viewport Pixel density Manufacturer resolution
Samsung Galaxy S20+ 384 x 854 3.75x 1440 x 3200
Samsung Galaxy S20 360 x 800 3x 1440 x 3200
Samsung Galaxy Z Flip3 360 x 880 3x 1080 x 2640
Apple iPhone 12 390 x 844 3x 1170 x 2532
Apple iPhone 12 Pro 390 x 844 3x 1170 x 2532
Google Pixel 5 393 x 851 2.75x 1080 x 2340
Samsung Galaxy Note20 Ultra 412 x 883 3.5x 1440 x 3088

Frequently asked questions about Samsung Galaxy S20+

What is the CSS viewport resolution of Samsung Galaxy S20+?

The CSS viewport of Samsung Galaxy S20+ measures 384 pixels wide and 854 pixels high. This is the width to use for defining your media queries, not the manufacturer's resolution.

What is the pixel density of Samsung Galaxy S20+?

The device pixel ratio of Samsung Galaxy S20+ is 3.75. Each CSS pixel is thus displayed by 3.75 physical pixels, requiring you to provide your images in 3.75x to keep them sharp.

What is the screen resolution of Samsung Galaxy S20+?

The panel of Samsung Galaxy S20+ displays 1440 x 3200 physical pixels. This is the value reported by most analytics tools, while your CSS works on a viewport of 384 x 854 pixels.

How to test my site on Samsung Galaxy S20+ without the device?

Install the Mobile FIRST extension on Chrome, Firefox, or Edge, then select Samsung Galaxy S20+. Your page displays in a viewport of 384 x 854 pixels with the corresponding mobile User-Agent, in two clicks and for free.

What is the difference with Chrome DevTools' responsive mode?

DevTools resizes the window and applies partial emulation. Mobile FIRST additionally applies the User-Agent of Samsung Galaxy S20+, touch events, scroll behavior, and the actual appearance of the device, and allows capturing directly usable images and videos.

Can I test a localhost address on Samsung Galaxy S20+?

Yes. The extension works on any URL open in your browser, including localhost:3000, 127.0.0.1, or a password-protected pre-production environment.

Do you need to buy a Samsung Galaxy S20+ to test your site?

No. The simulation covers the vast majority of development needs at no cost. A final test on a real device is still recommended before critical production deployment, but it's no longer necessary for each iteration.

Which media query to use to target Samsung Galaxy S20+?

A media query on the exact width targets Samsung Galaxy S20+: @media only screen and (min-width: 384px). Combine it with the pixel density to precisely target this model and those sharing its format.

Continue testing on another model

All Samsung resolutions → All devices →

Other Samsung models

Test your site on 77 devices, directly in your browser

Without buying a single phone, without creating an account.

  • 77 devices available upon installation
  • Real viewport, User-Agent, and touch events
  • Also works on localhost and in pre-production
  • Exportable screenshots and videos
Install the extension

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