Notch and safe areas
On Apple iPhone 17 PRO MAX, the notch and gesture bar reserve part of the screen. Without the env(safe-area-inset-*) variables, your fixed headers and bottom-stuck buttons go under these areas and become unusable.
Apple iPhone 17 PRO MAX: CSS viewport of 440 × 956 px, resolution and responsive test
Apple · iOS 26.0 · Smartphone · 2025
Released in 2025, Apple iPhone 17 PRO MAX features a CSS viewport of 440 x 956 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 17 PRO MAX directly in your browser, without buying the device.
- Apple iPhone 17 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
Install the extension
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Why test your site on Apple iPhone 17 PRO MAX?
Large mobile screen
With 440 pixels wide, Apple iPhone 17 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 17 PRO MAX is rendered by 3 physical pixels. Any image, icon, or font provided in simple resolution appears immediately blurry.
CSS viewport resolution of Apple iPhone 17 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.
- 440 pixels in width
- 956 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 17 PRO MAX
3
The device pixel ratio of Apple iPhone 17 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 17 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.
- 1320 pixels in width
- 2868 pixels in height
- 19.5:9 Screen ratio
458 pixels per inch (ppi) · 6.9 inches diagonal, or 17.5 cm
User-Agent of Apple iPhone 17 PRO MAX
This string is what the browser of Apple iPhone 17 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 17 PRO MAX, 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/604.1Notch and safe areas of Apple iPhone 17 PRO MAX
On Apple iPhone 17 PRO MAX, part of the screen is reserved for the notch and gesture bar. Without precaution, a fixed header goes under the notch, and a bottom-stuck button becomes impossible to touch.
Two conditions to remedy this: declare viewport-fit=cover in the meta viewport tag, then use the env(safe-area-inset-*) variables in your padding.
Safe areas
Protects your fixed elements from the notch and gesture bar of Apple iPhone 17 PRO MAX.
.header {
padding-top: env(safe-area-inset-top);
}
.bottom-bar {
padding-bottom: env(safe-area-inset-bottom);
}Media queries and code snippets for Apple iPhone 17 PRO MAX
These snippets are generated from the exact characteristics of Apple iPhone 17 PRO MAX. Copy them directly into your stylesheet or configuration.
CSS media query
Targets screens whose width matches that of Apple iPhone 17 PRO MAX and models of the same format.
@media only screen and (min-width: 440px) and (max-width: 955px) {
/* Apple iPhone 17 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 17 PRO MAX.
// tailwind.config.js
module.exports = {
theme: {
screens: {
'apple-iphone-17-pro-max-2025': '440px'
}
}
}JavaScript detection
Detects format and density client-side.
const isDeviceWidth = window.matchMedia('(min-width: 440px)').matches;
const isHighDensity = window.devicePixelRatio >= 3;Meta viewport tag
Essential for Apple iPhone 17 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, viewport-fit=cover">Free Apple iPhone 17 PRO MAX simulator
Mobile FIRST includes Apple iPhone 17 PRO MAX: your page displays in a viewport of 440 x 956 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.
- 01 Install the extension Add Mobile FIRST to Chrome, Firefox, or Edge. Installation is free and requires no account.
- 02 Open the page to test Go to the URL to check, including a local address like localhost:3000.
- 03 Choose Apple iPhone 17 PRO MAX Select Apple iPhone 17 PRO MAX from the list of devices. The viewport switches to 440 x 956 pixels, and the mobile User-Agent is applied.
- 04 Check rendering Scroll, change orientation, test your forms, then capture an image or video to share.
Models sharing the format of Apple iPhone 17 PRO MAX
These 1 devices share exactly the viewport of 440 x 956 pixels and the 3x density of Apple iPhone 17 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 17 PRO MAX are the ones to test right after, as they reveal poorly placed breakpoints.
| Model | CSS Viewport | Pixel density | Manufacturer resolution |
|---|---|---|---|
| Apple iPhone 17 PRO MAX | 440 x 956 | 3x | 1320 x 2868 |
| Samsung Galaxy A17 | 412 x 892 | 2.625x | 1082 x 2342 |
| Google Pixel 8 | 412 x 915 | 2.625x | 1080 x 2400 |
| Google Pixel 10 | 412 x 924 | 2.625x | 1082 x 2426 |
| Apple iPhone Air | 420 x 912 | 3x | 1260 x 2736 |
| Apple iPhone 16 Plus | 430 x 932 | 3x | 1290 x 2796 |
| Apple iPhone 16 PRO MAX | 440 x 956 | 3x | 1320 x 2868 |
Frequently asked questions about Apple iPhone 17 PRO MAX
What is the CSS viewport resolution of Apple iPhone 17 PRO MAX?
The CSS viewport of Apple iPhone 17 PRO MAX measures 440 pixels wide and 956 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 17 PRO MAX?
The device pixel ratio of Apple iPhone 17 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 17 PRO MAX?
The panel of Apple iPhone 17 PRO MAX displays 1320 x 2868 physical pixels. This is the value reported by most analytics tools, while your CSS works on a viewport of 440 x 956 pixels.
What is the User-Agent of Apple iPhone 17 PRO MAX?
The User-Agent of Apple iPhone 17 PRO MAX 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
Which devices have the same viewport as Apple iPhone 17 PRO MAX?
1 other models share exactly the viewport of 440 x 956 pixels and the 3x density of Apple iPhone 17 PRO MAX: Apple iPhone 16 PRO MAX. A rendering validated on one is valid on all others.
How to test my site on Apple iPhone 17 PRO MAX without the device?
Install the Mobile FIRST extension on Chrome, Firefox, or Edge, then select Apple iPhone 17 PRO MAX. Your page displays in a viewport of 440 x 956 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 17 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 17 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 17 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 17 PRO MAX?
A media query on the exact width targets Apple iPhone 17 PRO MAX: @media only screen and (min-width: 440px). Combine it with the pixel density to precisely target this model and those sharing its format.
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
Free installation in seconds · computer only