iPhone 11 Pro vs iPhone 15 Pro: screen size and viewport
The iPhone 11 Pro lays web pages out at 375 × 812 CSS px with a pixel ratio of 3; the iPhone 15 Pro at 393 × 852 with 3. The iPhone 15 Pro is 18 px wider and 40 px taller.
The two screens side by side
Specs compared
| Spec | iPhone 11 Pro | iPhone 15 Pro | Difference |
|---|---|---|---|
| Viewport, portrait (CSS px) | 375 × 812 | 393 × 852 | −18 px wide, −40 px tall |
| Device pixel ratio | 3 | 3 | same |
| Physical resolution | 1125 × 2436 | 1179 × 2556 | iPhone 15 Pro: 10% more pixels |
| Aspect ratio | 19.5:9 | 19.5:9 | about the same |
| Visible height, portrait, with browser bars | ~635 px | ~662 px | −27 px for the iPhone 11 Pro |
| Landscape width (CSS px) | 812 px | 852 px | −40 px for the iPhone 11 Pro |
| Visible height, landscape | ~325 px | ~343 px | −18 px for the iPhone 11 Pro |
| First released | 2020 | 2022 | 2 years apart |
| Engine in MobileCheck | WebKit (Safari) | WebKit (Safari) | same engine |
CSS px are the units media queries see. Visible heights subtract the status bar and the Safari on iOS bars as set in our device profiles; real bar heights vary with settings and scrolling. The release year is that of the first model with each screen.
What this means for your layout
How the width difference affects your layout
The iPhone 15 Pro is 18 CSS px wider (393 vs 375, 5% more). One common breakpoint falls between them: (min-width: 390px) (a common phone test width) matches the iPhone 15 Pro but not the iPhone 11 Pro, so a rule written for that width applies on only one of the two.
In a 2-column card grid with 16 px page padding and 16 px gaps, each card is 172 px wide on the iPhone 15 Pro and 163 px on the iPhone 11 Pro. Check that buttons, prices and long words still fit in the narrower one.
Pixel density and image sizes
Both draw each CSS pixel with 3 × 3 device pixels, so text and icons are equally sharp. A full-width image (sizes="100vw") needs about 1125 px on the iPhone 11 Pro and 1179 px on the iPhone 15 Pro to look sharp.
With a srcset such as 640w, 828w, 1080w, 1290w, 1440w, 1640w, 2048w, the browser would normally pick the 1290w file on the iPhone 11 Pro and the same one on the iPhone 15 Pro.
Above 2× most people can't see much difference in photos, so capping photo candidates around twice the CSS width saves bytes on both. Keep SVG for icons and logos: they stay sharp at any ratio.
How much fits above the fold
On first load about 662 px of the page is visible on the iPhone 15 Pro and 635 px on the iPhone 11 Pro: 27 px less (4%) on the iPhone 11 Pro, roughly 1 line of 16 px body text at a 1.5 line height.
If your main button sits just above the fold on the iPhone 15 Pro, it can end up below it on the iPhone 11 Pro. Keep the headline and the main action within the first 635 px, and size full-screen sections with 100svh rather than 100vh — see the 100vh problem on mobile.
In landscape
Turned sideways, the iPhone 11 Pro is 812 px wide and the iPhone 15 Pro 852 px; (min-width: 840px) matches only the iPhone 15 Pro in landscape. The visible height drops to about 325 and 343 px, so a 64 px sticky header covers 20% and 19% of the screen — under the 25% at which MobileCheck flags fixed bars covering the page.
Same browser engine
Both are Apple devices, so both render with WebKit, the engine behind Safari. Engine quirks are the same; the differences above come from size alone. Chrome DevTools only emulates the size and still draws with Chromium, so check Apple devices in a WebKit browser — see how to test on an iPhone.
More about these devices
- iPhone 11 Pro viewport size — one screen for the iPhone 12 / 13 mini / X / XS / 11 Pro
- iPhone 15 Pro viewport size — one screen for the iPhone 14 Pro / 15 / 15 Pro / 16
Or open the free check with the iPhone 11 Pro and the iPhone 15 Pro preselected: full-page screenshots in WebKit, with problems such as small text and crowded buttons highlighted.
Related comparisons
- iPhone 15 vs Galaxy S24 — 393 vs 360 px wide, 3× vs 3×
- iPhone 15 vs Pixel 8 — 393 vs 412 px wide, 3× vs 2.625×
- Xiaomi 13 vs iPhone 15 — both 393 px wide, 873 vs 852 px tall
- iPhone 16 vs iPhone 17 — 393 vs 402 px wide, 3× vs 3×
- iPhone 15 Pro vs iPhone 15 Pro Max — 393 vs 430 px wide, 3× vs 3×
- iPhone 14 vs iPhone 15 — 390 vs 393 px wide, 3× vs 3×
Compare other devices → · All mobile viewport sizes →
Frequently asked questions
Is the iPhone 11 Pro screen bigger than the iPhone 15 Pro?
In CSS pixels, which decide how much of a page fits, the iPhone 15 Pro is larger: 393 × 852 against 375 × 812. The iPhone 15 Pro has more physical pixels (1179 × 2556), which makes it sharper rather than roomier.
Do I need different CSS for the iPhone 11 Pro and the iPhone 15 Pro?
Only if your breakpoints fall between 375 and 393 px: a min-width query at 390px applies to one and not the other. A fluid layout handles both without device-specific rules.
How much of a web page is visible on the iPhone 11 Pro vs the iPhone 15 Pro?
About 375 × 635 CSS px on the iPhone 11 Pro and 393 × 662 on the iPhone 15 Pro when a page first opens in portrait, after the status bar and Safari on iOS's bars. Bar heights are our device profiles' estimates.