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Source-verified previous-generation Pro Max

iPhone 15 Pro Max Screen Size, Resolution and Viewport

Keep a widely used 6.7-inch Pro Max reference in the test matrix while distinguishing Apple’s display specifications from normalized Safari layout dimensions.

iPhone 15 Pro Max screen reference diagram Portrait phone outline showing a 430 by 932 CSS pixel reference and 1290 by 2796 native pixel grid. 430 × 932 CSS pixel reference 1290 × 2796 native pixel grid 6.7 in · 460 PPI DPR 3 reference
Reference diagram, not a product rendering. Rounded corners, browser controls, safe areas, and the live visual viewport reduce or reshape usable content space.

Two measurement layers

Hardware specifications and browser reference

The native display values come from Apple. CSS dimensions are a normalized testing baseline and remain dependent on browser state.

Screen and viewport specifications for iPhone 15 Pro Max
FieldReference valueEvidence scope
Display diagonal6.7 inchesApple specification; actual viewable area is less because of rounded corners.
Native pixel grid1290 × 2796Apple hardware specification.
Pixel density460 PPIApple hardware specification.
CSS viewport430 × 932 CSS pxNormalized portrait testing reference; verify live.
Device pixel ratio3Normalized mapping reference for screenshots and browser QA.
Reference CSS area400,760 CSS px²Calculated from the normalized width and height; not physical screen area.

Manufacturer-verified layer

What the hardware values establish

Apple lists a 6.7-inch all-screen OLED display at 460 PPI and notes that rounded corners reduce actual viewable area. The hardware grid matches several large-iPhone records but does not guarantee identical browser behavior.

Browser-dependent layer

How to use the CSS reference

A 430 CSS-pixel width remains valuable for production QA because it represents a common large-iPhone layout class without assuming the newest hardware generation.

Responsive testing decisions

Retain iPhone 15 Pro Max as a compatibility reference

Use it when analytics, support obligations, or regression coverage justify testing a widely deployed previous-generation large iPhone.

Regression coverage

Recheck checkout, authentication, uploads, and account flows after browser or application releases on a previous-generation Pro Max class.

Cross-platform comparison

Pair this page with the Galaxy S24 Ultra comparison when a bug report needs iOS and Android viewport context.

Screenshot support

Document the 430 CSS-pixel reference and DPR 3 mapping when customer screenshots arrive at 1290 physical pixels wide.

Large-iPhone consistency

Compare it with iPhone 16 Plus to verify that shared viewport dimensions do not encourage unsupported assumptions about browser or hardware features.

Limits of a static record

Verify the state that users actually experience

A model name and portrait reference cannot reproduce every browser, accessibility, orientation, keyboard, or safe-area condition.

  • Shared nominal viewport dimensions do not make iPhone 15 Pro Max and newer large iPhones interchangeable for every browser or device test.
  • Keep OS version and Safari version in bug reports because software state can matter more than the display record alone.
  • Do not infer battery, camera, performance, refresh behavior, or purchasing value from this screen and viewport reference.
  • Test safe areas, the keyboard, rotation, and increased text size for critical flows instead of relying on responsive emulation alone.

Evidence and provenance

One source, two clearly labelled scopes

Apple verifies the 6.7-inch display, 1290 × 2796 native pixel grid in portrait width × height order, and 460 PPI. The 430 × 932 CSS viewport is a normalized browser-testing reference and may differ across Safari states and settings.

Review method: Display diagonal, native resolution, and pixel density were checked against Apple Support. The CSS viewport was reviewed as a normalized DPR 3 reference and separated from Apple-verified hardware claims.

Reviewed August 14, 2026 by ScreenMetricLab Editorial Team.

Frequently asked questions

Questions about the iPhone 15 Pro Max display reference

What is the iPhone 15 Pro Max viewport size?

Use 430 × 932 CSS pixels as a normalized portrait reference at DPR 3. Live Safari dimensions depend on browser and system state.

Is 1290 × 2796 the responsive breakpoint size?

No. It is the native physical resolution in portrait width × height order. CSS layouts respond to the browser viewport measured in CSS pixels.

Does it share a viewport with iPhone 16 Plus?

Both records use the same normalized 430 × 932 reference, but hardware, operating system, and live browser behavior still require separate verification.

Is iPhone 15 Pro Max still useful for web testing?

Yes when it appears in real traffic or support scope. It provides a relevant previous-generation large-iPhone compatibility baseline.

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