iPhone 15 Pro vs iPhone 15 Pro Max: screen size and viewport
The iPhone 15 Pro lays web pages out at 393 × 852 CSS px with a pixel ratio of 3; the iPhone 15 Pro Max at 430 × 932 with 3. The iPhone 15 Pro Max is 37 px wider and 80 px taller.
The two screens side by side
Specs compared
| Spec | iPhone 15 Pro | iPhone 15 Pro Max | Difference |
|---|---|---|---|
| Viewport, portrait (CSS px) | 393 × 852 | 430 × 932 | −37 px wide, −80 px tall |
| Device pixel ratio | 3 | 3 | same |
| Physical resolution | 1179 × 2556 | 1290 × 2796 | iPhone 15 Pro Max: 20% more pixels |
| Aspect ratio | 19.5:9 | 19.5:9 | about the same |
| Visible height, portrait, with browser bars | ~662 px | ~742 px | −80 px for the iPhone 15 Pro |
| Landscape width (CSS px) | 852 px | 932 px | −80 px for the iPhone 15 Pro |
| Visible height, landscape | ~343 px | ~380 px | −37 px for the iPhone 15 Pro |
| First released | 2022 | 2022 | same year |
| 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 Max is 37 CSS px wider (430 vs 393, 9% more). 2 common breakpoints fall between them: (min-width: 414px) (a common large-phone test width), (min-width: 430px) (a common large-phone test width) match the iPhone 15 Pro Max but not the iPhone 15 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 191 px wide on the iPhone 15 Pro Max and 172 px on the iPhone 15 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 1179 px on the iPhone 15 Pro and 1290 px on the iPhone 15 Pro Max 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 15 Pro and the same one on the iPhone 15 Pro Max.
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 742 px of the page is visible on the iPhone 15 Pro Max and 662 px on the iPhone 15 Pro: 80 px less (12%) on the iPhone 15 Pro, roughly 3 lines 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 Max, it can end up below it on the iPhone 15 Pro. Keep the headline and the main action within the first 662 px, and size full-screen sections with 100svh rather than 100vh — see the 100vh problem on mobile.
In landscape
Turned sideways, the iPhone 15 Pro is 852 px wide and the iPhone 15 Pro Max 932 px. The visible height drops to about 343 and 380 px, so a 64 px sticky header covers 19% and 17% 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 15 Pro viewport size — one screen for the iPhone 14 Pro / 15 / 15 Pro / 16
- iPhone 15 Pro Max viewport size — one screen for the iPhone 14 Pro Max / 15 Plus / 15 Pro Max / 16 Plus
Or open the free check with the iPhone 15 Pro and the iPhone 15 Pro Max 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×
- iPhone 15 Pro Max vs Galaxy S24 Ultra — 430 vs 384 px wide, 3× vs 2.813×
- 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 Max vs iPhone 16 Pro Max — 430 vs 440 px wide, 3× vs 3×
Compare other devices → · All mobile viewport sizes →
Frequently asked questions
Is the iPhone 15 Pro screen bigger than the iPhone 15 Pro Max?
In CSS pixels, which decide how much of a page fits, the iPhone 15 Pro Max is larger: 430 × 932 against 393 × 852. The iPhone 15 Pro Max has more physical pixels (1290 × 2796), which makes it sharper rather than roomier.
Do I need different CSS for the iPhone 15 Pro and the iPhone 15 Pro Max?
Only if your breakpoints fall between 393 and 430 px: a min-width query at 414px or 430px 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 15 Pro vs the iPhone 15 Pro Max?
About 393 × 662 CSS px on the iPhone 15 Pro and 430 × 742 on the iPhone 15 Pro Max when a page first opens in portrait, after the status bar and Safari on iOS's bars. Bar heights are our device profiles' estimates.