Samsung Galaxy J7: CSS viewport of 360 × 640 px, resolution and responsive test

Why test your site on Samsung Galaxy J7?

CSS viewport resolution of Samsung Galaxy J7

This resolution is what your stylesheet actually manipulates. It determines the applied breakpoint, the number of displayed columns, and the size of your images.

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 J7

The device pixel ratio of Samsung Galaxy J7 is 2. Each CSS pixel is thus rendered by 2 physical pixels, making any image provided in simple resolution immediately visible.

Manufacturer resolution of Samsung Galaxy J7

This is the number of physical pixels on the screen, as announced by the manufacturer. Useful for preparing your image exports, useless for your media queries.

• 720 pixels in width
• 1280 pixels in height
• 267 pixels per inch (ppi)
• 5.5 inches diagonal, or 14 cm
• Screen ratio of 16:9

Media queries and code snippets for Samsung Galaxy J7

These snippets are generated from the exact characteristics of Samsung Galaxy J7. Copy them directly into your stylesheet or configuration.

@media only screen and (min-width: 360px) and (max-width: 639px) {
  /* Samsung Galaxy J7 */
}

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

// tailwind.config.js
module.exports = {
  theme: {
    screens: {
      'samsung-galaxy-j7': '360px'
    }
  }
}

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

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

Free Samsung Galaxy J7 simulator

Mobile FIRST does not yet include Samsung Galaxy J7, 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 J7 — Select Samsung Galaxy J7 from the list of devices. The viewport switches to 360 x 640 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 J7

These 5 devices share exactly the viewport of 360 x 640 pixels and the 2x density of Samsung Galaxy J7. Their CSS rendering is therefore exactly the same: what you validate on one is valid on all others.

• HTC Desire 10 Lifestyle
• HTC Desire 628
• Samsung Galaxy J4
• Samsung Galaxy J5
• Samsung Galaxy J5 Prime

Comparison with similar models

The neighboring formats of Samsung Galaxy J7 are the ones to test right after, as they reveal poorly placed breakpoints.

Frequently asked questions about Samsung Galaxy J7

Updated on August 15, 2026