Samsung Galaxy A12: CSS viewport of 360 × 800 px, resolution and responsive test

Samsung · Android 16.0 · Smartphone · 2021

Samsung Galaxy A12, smartphone Samsung from 2021, displays a CSS viewport of 360 x 800 pixels. Below, find its 2x density, ready-to-copy media queries, and how to test your site on it without buying the device.

Test your site on Samsung Galaxy A12 directly in your browser, without buying the device.

  • Samsung Galaxy A12 available in the device list
  • 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 A12?

Narrow viewport

With only 360 pixels wide, Samsung Galaxy A12 is among the most restrictive formats. This is where tables overflow, titles break poorly, and buttons become too small.

Very elongated screen

With a ratio of 20:9, Samsung Galaxy A12 displays a lot of height for little width. Sections designed in landscape become endless columns, and full-screen visuals are poorly cropped.

2x density

With a density of 2x, Samsung Galaxy A12 provides a useful benchmark to ensure your images remain sharp without serving unnecessarily large files.

CSS viewport resolution of Samsung Galaxy A12

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.

  • 360 pixels in width
  • 800 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 A12

2

The device pixel ratio of Samsung Galaxy A12 is 2.

Your images should therefore be exported 2 times larger than their display size, otherwise they will appear softened on this screen.

Manufacturer resolution of Samsung Galaxy A12

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.

  • 720 pixels in width
  • 1600 pixels in height
  • 20:9 Screen ratio

User-Agent of Samsung Galaxy A12

This string is what the browser of Samsung Galaxy A12 sends. It is useful for your automated tests, reading your server logs, and server-side detection.

User-Agent

User-Agent string used by Samsung Galaxy A12, useful for your automated tests and logs.

Mozilla/5.0 (Linux; Android 16; SM-A125M) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.6778.260 Mobile Safari/537.36

Media queries and code snippets for Samsung Galaxy A12

These snippets are generated from the exact characteristics of Samsung Galaxy A12. Copy them directly into your stylesheet or configuration.

CSS media query

Targets screens whose width matches that of Samsung Galaxy A12 and models of the same format.

@media only screen and (min-width: 360px) and (max-width: 799px) {
  /* Samsung Galaxy A12 */
}

Density media query

Serves high-resolution images to screens of at least 2x.

@media only screen and (-webkit-min-device-pixel-ratio: 2),
       only screen and (min-resolution: 192dpi) {
  /* High-density images and icons */
}

Tailwind configuration

Adds a named breakpoint at the exact width of Samsung Galaxy A12.

// tailwind.config.js
module.exports = {
  theme: {
    screens: {
      'samsung-galaxy-a12-2021': '360px'
    }
  }
}

JavaScript detection

Detects format and density client-side.

const isDeviceWidth = window.matchMedia('(min-width: 360px)').matches;
const isHighDensity = window.devicePixelRatio >= 2;

Meta viewport tag

Essential for Samsung Galaxy A12 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 A12 simulator

Mobile FIRST includes Samsung Galaxy A12: your page displays in a viewport of 360 x 800 pixels, with the model's User-Agent, touch events, and scrolling behavior of a real mobile.

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 A12 Select Samsung Galaxy A12 from the list of devices. The viewport switches to 360 x 800 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.

Models sharing the format of Samsung Galaxy A12

These 1 devices share exactly the viewport of 360 x 800 pixels and the 2x density of Samsung Galaxy A12. Their CSS rendering is therefore exactly the same: what you validate on one is valid on all others.

Comparison with similar models

The neighboring formats of Samsung Galaxy A12 are the ones to test right after, as they reveal poorly placed breakpoints.

Comparison of resolutions of Samsung Galaxy A12 and nearby models
Model CSS Viewport Pixel density Manufacturer resolution
Samsung Galaxy A12 360 x 800 2x 720 x 1600
Apple iPhone SE 375 x 667 2x 750 x 1334
Google Pixel 6 PRO 360 x 780 4x 1440 x 3120
Samsung Galaxy S21 360 x 800 3x 1080 x 2400
Samsung Galaxy S21 Ultra 360 x 800 4x 1440 x 3200
Samsung Galaxy S20 360 x 800 3x 1440 x 3200
Xiaomi Mi 11i 360 x 800 3x 1080 x 2400

Frequently asked questions about Samsung Galaxy A12

What is the CSS viewport resolution of Samsung Galaxy A12?

The CSS viewport of Samsung Galaxy A12 measures 360 pixels wide and 800 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 A12?

The device pixel ratio of Samsung Galaxy A12 is 2. Each CSS pixel is thus displayed by 2 physical pixels, requiring you to provide your images in 2x to keep them sharp.

What is the screen resolution of Samsung Galaxy A12?

The panel of Samsung Galaxy A12 displays 720 x 1600 physical pixels. This is the value reported by most analytics tools, while your CSS works on a viewport of 360 x 800 pixels.

What is the User-Agent of Samsung Galaxy A12?

The User-Agent of Samsung Galaxy A12 is: Mozilla/5.0 (Linux; Android 16; SM-A125M) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.6778.260 Mobile Safari/537.36

Which devices have the same viewport as Samsung Galaxy A12?

1 other models share exactly the viewport of 360 x 800 pixels and the 2x density of Samsung Galaxy A12: Generic device on Android. A rendering validated on one is valid on all others.

How to test my site on Samsung Galaxy A12 without the device?

Install the Mobile FIRST extension on Chrome, Firefox, or Edge, then select Samsung Galaxy A12. Your page displays in a viewport of 360 x 800 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 A12, 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 A12?

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 A12 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 A12?

A media query on the exact width targets Samsung Galaxy A12: @media only screen and (min-width: 360px). 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

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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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