Xiaomi 17 Ultra Simulator & Emulator — Viewport, Resolution & CSS Specs
Test your website on Xiaomi 17 Ultra in one click — no real device required.
- Free
- 10,000+ users
Xiaomi 17 Ultra is a popular device to simulate and emulate among web developers and designers for testing responsive layouts and mobile UI behavior. Year of release: 2026.
Why Test on Xiaomi 17 Ultra?
Viewport
A large top-tier screen that finds layout problems you didn't know you had.
Pixel Density (DPR)
High pixel density exposes image quality, scaling inconsistencies and minor visual flaws.
Performance & Animations
The best Xiaomi hardware - slow pages and heavy scripts feel out of place.
Viewport Size (CSS Resolution)
The CSS viewport defines how media queries, layout breakpoints, and responsive components behave.
For Xiaomi 17 Ultra, the CSS viewport measures:
- Width: 400 px
- Height: 869 px
ℹ️ The visible height can vary slightly depending on the browser UI (Safari, Chrome, etc.).
Some analytics platforms only display the physical screen resolution (see below) instead of the CSS viewport size.
To see exactly how this viewport behaves in real conditions, you can simulate Xiaomi 17 Ultra directly in your browser using Phone Simulator.
Free Xiaomi 17 Ultra Simulator & Emulator
Accurate viewport simulation directly in your browser.
- No account required
- 40+ devices included
- Works offline
- Free
- 10,000+ users
Pixel Density (Device Pixel Ratio)
Xiaomi 17 Ultra has a device pixel ratio of 3.
Each CSS pixel is rendered using 3 physical pixels, resulting in sharper text and images.
For CSS targeting:
@media only screen and (-webkit-min-device-pixel-ratio: 3) {
/* High-DPI specific styles */
}In JavaScript:
window.devicePixelRatio;
// returns: 3Physical Screen Resolution
Physical resolution refers to the actual number of hardware pixels on the display. While it does not affect CSS layouts, it is commonly shown in analytics and device specifications.
- Width: 1200 px
- Height: 2608 px
ℹ️ Physical resolution is not used for CSS layouts but is often shown in analytics tools.
Frequently Asked Questions
What is the viewport size of Xiaomi 17 Ultra?
Xiaomi 17 Ultra has a viewport size of 400×869 CSS pixels.
How can I test my website on Xiaomi 17 Ultra?
You can simulate it instantly using the Phone Simulator Chrome extension - no real device required.
How is Phone Simulator better than Chrome DevTools for Xiaomi 17 Ultra?
DevTools shows an approximate viewport size, but does not emulate the real mobile browser. Phone Simulator uses exact device characteristics and shows how your site renders in a real mobile browser environment.
Can I test localhost with Phone Simulator on Xiaomi 17 Ultra?
Yes. Phone Simulator works with any local URL, including localhost:3000, 127.0.0.1, and similar development setups.
Do I need to buy a Xiaomi 17 Ultra for testing?
No. Phone Simulator provides accurate device simulation for $0 instead of spending $1399+ on a physical device.
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