Apple iPhone Duo folded: CSS viewport of 466 × 678 px, resolution and responsive test

Apple · iOS 26.0 · Smartphone · 2026

Apple iPhone Duo folded, smartphone Apple from 2026, displays a CSS viewport of 466 x 678 pixels. Below, find its 3x density, ready-to-copy media queries, and how to test your site on it without buying the device.

Test your site on Apple iPhone Duo folded directly in your browser, without buying the device.

  • Apple iPhone Duo folded available in the device list
  • 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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Why test your site on Apple iPhone Duo folded?

Large mobile screen

With 466 pixels wide, Apple iPhone Duo folded 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 Duo folded is rendered by 3 physical pixels. Any image, icon, or font provided in simple resolution appears immediately blurry.

Actual media queries

The 466 x 678 pixels viewport of Apple iPhone Duo folded rarely matches the round breakpoints of frameworks. It is precisely between these values that layouts break.

CSS viewport resolution of Apple iPhone Duo folded

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.

  • 466 pixels in width
  • 678 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 Duo folded

3

The device pixel ratio of Apple iPhone Duo folded is 3.

Your images should therefore be exported 3 times larger than their display size, otherwise they will appear softened on this screen.

Manufacturer resolution of Apple iPhone Duo folded

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.

  • 1398 pixels in width
  • 2034 pixels in height
  • 14.5:10 Screen ratio

460 pixels per inch (ppi) · 5.4 inches diagonal, or 13.6 cm

User-Agent of Apple iPhone Duo folded

This string is what the browser of Apple iPhone Duo folded 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 Duo folded, useful for your automated tests and logs.

Mozilla/5.0 (iPhone; CPU iPhone OS 26_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/26.0 Mobile/15E148 Safari/604.1

Media queries and code snippets for Apple iPhone Duo folded

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

CSS media query

Targets screens whose width matches that of Apple iPhone Duo folded and models of the same format.

@media only screen and (min-width: 466px) and (max-width: 677px) {
  /* Apple iPhone Duo folded */
}

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 Duo folded.

// tailwind.config.js
module.exports = {
  theme: {
    screens: {
      'apple-iphone-duo-folded-2026': '466px'
    }
  }
}

JavaScript detection

Detects format and density client-side.

const isDeviceWidth = window.matchMedia('(min-width: 466px)').matches;
const isHighDensity = window.devicePixelRatio >= 3;

Meta viewport tag

Essential for Apple iPhone Duo folded 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 Duo folded simulator

Mobile FIRST includes Apple iPhone Duo folded: your page displays in a viewport of 466 x 678 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 Duo folded Select Apple iPhone Duo folded from the list of devices. The viewport switches to 466 x 678 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 Apple iPhone Duo folded are the ones to test right after, as they reveal poorly placed breakpoints.

Comparison of resolutions of Apple iPhone Duo folded and nearby models
Model CSS Viewport Pixel density Manufacturer resolution
Apple iPhone Duo folded 466 x 678 3x 1398 x 2034
Samsung Galaxy S24 360 x 780 3x 1080 x 2340
Xiaomi 12 2022 360 x 800 3x 1080 x 2400
Samsung Galaxy Z Flip3 360 x 880 3x 1080 x 2640
Apple iPhone 16 393 x 852 3x 1179 x 2556
Apple iPhone 18 PRO 402 x 873 3x 1206 x 2619
Apple iPhone 17 PRO 402 x 873 3x 1206 x 2622

Frequently asked questions about Apple iPhone Duo folded

What is the CSS viewport resolution of Apple iPhone Duo folded?

The CSS viewport of Apple iPhone Duo folded measures 466 pixels wide and 678 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 Duo folded?

The device pixel ratio of Apple iPhone Duo folded 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 Duo folded?

The panel of Apple iPhone Duo folded displays 1398 x 2034 physical pixels. This is the value reported by most analytics tools, while your CSS works on a viewport of 466 x 678 pixels.

What is the User-Agent of Apple iPhone Duo folded?

The User-Agent of Apple iPhone Duo folded is: Mozilla/5.0 (iPhone; CPU iPhone OS 26_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/26.0 Mobile/15E148 Safari/604.1

How to test my site on Apple iPhone Duo folded without the device?

Install the Mobile FIRST extension on Chrome, Firefox, or Edge, then select Apple iPhone Duo folded. Your page displays in a viewport of 466 x 678 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 Duo folded, 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 Duo folded?

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 Duo folded 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 Duo folded?

A media query on the exact width targets Apple iPhone Duo folded: @media only screen and (min-width: 466px). 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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Without buying a single phone, without creating an account.

  • 81 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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