Apple iPhone 12 Pro Max: CSS viewport of 428 × 926 px, resolution and responsive test

Apple · iOS 14.0 · Smartphone · 2020

Released in 2020, Apple iPhone 12 Pro Max features a CSS viewport of 428 x 926 pixels. Here are all its display characteristics and how to check the responsive rendering of your site on this model.

Test your site on Apple iPhone 12 Pro Max directly in your browser, without buying the device.

  • Apple iPhone 12 Pro Max 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 Apple iPhone 12 Pro Max?

Large mobile screen

With 428 pixels wide, Apple iPhone 12 Pro Max already shifts some layouts to their tablet breakpoint. A test prevents overly stretched columns and unreadable text areas.

3x density

Each CSS pixel of Apple iPhone 12 Pro Max is rendered by 3 physical pixels. Any image, icon, or font provided in simple resolution appears immediately blurry.

Very elongated screen

With a ratio of 19.5:9, Apple iPhone 12 Pro Max displays a lot of height for little width. Sections designed in landscape become endless columns, and full-screen visuals are poorly cropped.

CSS viewport resolution of Apple iPhone 12 Pro Max

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

  • 428 pixels in width
  • 926 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 Apple iPhone 12 Pro Max

3

The device pixel ratio of Apple iPhone 12 Pro Max is 3.

Each CSS pixel is thus rendered by 3 physical pixels, making any image provided in simple resolution immediately visible.

Manufacturer resolution of Apple iPhone 12 Pro Max

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.

  • 1284 pixels in width
  • 2778 pixels in height
  • 19.5:9 Screen ratio

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

User-Agent of Apple iPhone 12 Pro Max

This string is what the browser of Apple iPhone 12 Pro Max sends. It is useful for your automated tests, reading your server logs, and server-side detection.

User-Agent

User-Agent string used by Apple iPhone 12 Pro Max, useful for your automated tests and logs.

Mozilla/5.0 (iPhone; CPU iPhone OS 14_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/14.0 Mobile/15E148 Safari/604.1

Media queries and code snippets for Apple iPhone 12 Pro Max

These snippets are generated from the exact characteristics of Apple iPhone 12 Pro Max. Copy them directly into your stylesheet or configuration.

CSS media query

Targets screens whose width matches that of Apple iPhone 12 Pro Max and models of the same format.

@media only screen and (min-width: 428px) and (max-width: 925px) {
  /* Apple iPhone 12 Pro Max */
}

Density media query

Serves high-resolution images to screens of at least 3x.

@media only screen and (-webkit-min-device-pixel-ratio: 3),
       only screen and (min-resolution: 288dpi) {
  /* High-density images and icons */
}

Tailwind configuration

Adds a named breakpoint at the exact width of Apple iPhone 12 Pro Max.

// tailwind.config.js
module.exports = {
  theme: {
    screens: {
      'apple-iphone-12-pro-max': '428px'
    }
  }
}

JavaScript detection

Detects format and density client-side.

const isDeviceWidth = window.matchMedia('(min-width: 428px)').matches;
const isHighDensity = window.devicePixelRatio >= 3;

Meta viewport tag

Essential for Apple iPhone 12 Pro Max to use its CSS viewport and not a simulated width of 980 pixels.

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

Free Apple iPhone 12 Pro Max simulator

Mobile FIRST includes Apple iPhone 12 Pro Max: your page displays in a viewport of 428 x 926 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 Apple iPhone 12 Pro Max Select Apple iPhone 12 Pro Max from the list of devices. The viewport switches to 428 x 926 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 Apple iPhone 12 Pro Max

These 2 devices share exactly the viewport of 428 x 926 pixels and the 3x density of Apple iPhone 12 Pro Max. 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 Apple iPhone 12 Pro Max are the ones to test right after, as they reveal poorly placed breakpoints.

Comparison of resolutions of Apple iPhone 12 Pro Max and nearby models
Model CSS Viewport Pixel density Manufacturer resolution
Apple iPhone 12 Pro Max 428 x 926 3x 1284 x 2778
Samsung Galaxy Z Flip3 360 x 880 3x 1080 x 2640
Samsung Galaxy Note20 Ultra 412 x 883 3.5x 1440 x 3088
OnePlus Nord 2 412 x 915 2.625x 1080 x 2400
Apple iPhone 13 PRO MAX 428 x 926 3x 1284 x 2778
Apple iPhone 14 Plus 428 x 926 3x 1284 x 2778
Apple iPhone 14 PRO MAX 428 x 928 3x 1290 x 2796

Frequently asked questions about Apple iPhone 12 Pro Max

What is the CSS viewport resolution of Apple iPhone 12 Pro Max?

The CSS viewport of Apple iPhone 12 Pro Max measures 428 pixels wide and 926 pixels high. This is the width to use for defining your media queries, not the manufacturer's resolution.

What is the pixel density of Apple iPhone 12 Pro Max?

The device pixel ratio of Apple iPhone 12 Pro Max is 3. Each CSS pixel is thus displayed by 3 physical pixels, requiring you to provide your images in 3x to keep them sharp.

What is the screen resolution of Apple iPhone 12 Pro Max?

The panel of Apple iPhone 12 Pro Max displays 1284 x 2778 physical pixels. This is the value reported by most analytics tools, while your CSS works on a viewport of 428 x 926 pixels.

What is the User-Agent of Apple iPhone 12 Pro Max?

The User-Agent of Apple iPhone 12 Pro Max is: Mozilla/5.0 (iPhone; CPU iPhone OS 14_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/14.0 Mobile/15E148 Safari/604.1

Which devices have the same viewport as Apple iPhone 12 Pro Max?

2 other models share exactly the viewport of 428 x 926 pixels and the 3x density of Apple iPhone 12 Pro Max: Apple iPhone 13 PRO MAX, Apple iPhone 14 Plus. A rendering validated on one is valid on all others.

How to test my site on Apple iPhone 12 Pro Max without the device?

Install the Mobile FIRST extension on Chrome, Firefox, or Edge, then select Apple iPhone 12 Pro Max. Your page displays in a viewport of 428 x 926 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 Apple iPhone 12 Pro Max, 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 Apple iPhone 12 Pro Max?

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 Apple iPhone 12 Pro Max 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 Apple iPhone 12 Pro Max?

A media query on the exact width targets Apple iPhone 12 Pro Max: @media only screen and (min-width: 428px). Combine it with the pixel density to precisely target this model and those sharing its format.

Continue testing on another model

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Other Apple 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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