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Phone and foldable comparisons

iPhone 15 vs iPhone 15 Plus Screen Comparison

Compare iPhone 15 and iPhone 15 Plus viewport references for mobile layouts, screenshots, and responsive QA.

At a glance

Measured screen and viewport differences

Values combine reference display records and calculated geometry. Rounded corners, cutouts, hinges, browser UI, and device modes can change the usable area.

CSS viewport reference

iPhone 15 / 15 Pro
393 × 852 CSS px
iPhone 15 Plus
430 × 932 CSS px

Physical resolution

iPhone 15 / 15 Pro
1,179 × 2,556 px
iPhone 15 Plus
1,290 × 2,796 px

Diagonal

iPhone 15 / 15 Pro
6.1 inches
iPhone 15 Plus
6.7 inches

Calculated panel size

iPhone 15 / 15 Pro
5.5 × 2.6 inches
iPhone 15 Plus
6.1 × 2.8 inches

Calculated screen area

iPhone 15 / 15 Pro
14.2 square inches
iPhone 15 Plus
17.1 square inches

Pixel density

iPhone 15 / 15 Pro
460 PPI
iPhone 15 Plus
460 PPI

Aspect ratio

iPhone 15 / 15 Pro
19.5:9
iPhone 15 Plus
19.5:9

Device pixel ratio

iPhone 15 / 15 Pro
DPR 3
iPhone 15 Plus
DPR 3

Decision guide

Choose the screen that fits the task

The iPhone 15 Plus gives a larger mobile viewport reference than the standard iPhone 15. This comparison helps designers and QA testers understand fold position and visual density.

Choose iPhone 15 / 15 Pro when

  • Compare standard and larger iPhone viewport references.
  • Check form spacing, product cards, and mobile navigation.
Review iPhone 15 / 15 Pro data

Choose iPhone 15 Plus when

  • Check form spacing, product cards, and mobile navigation.
  • Review screenshots where content appears higher or lower on the page.
Review iPhone 15 Plus data

Visual comparison

Compare screen shapes

Compare physical screen proportions and native pixel grids, or switch to CSS viewport references for responsive-layout work. Every drawing uses one shared scale so the relative size remains meaningful.

Left device
Right device

CSS viewport comparison

Compare two devices to see the relative area.

—

iPhone 15 / 15 Pro

iPhone · DPR 3 · 460 PPI

—

iPhone 15 Plus

iPhone · DPR 3 · 460 PPI

Proportional comparison of iPhone 15 / 15 Pro and iPhone 15 Plus using physical screen dimensions, CSS viewport references, or native pixel grids.

Decision factors

What materially changes between these displays?

CSS viewport area

iPhone 15 / 15 Pro
334,836 CSS pixels
iPhone 15 Plus
400,760 CSS pixels

iPhone 15 Plus provides about 20% more normalized viewport area in this reference pair.

Physical pixel count

iPhone 15 / 15 Pro
3,013,524 pixels
iPhone 15 Plus
3,606,840 pixels

Physical pixels help explain screenshot and media detail; live layout still follows the browser viewport and scaling.

Physical display area

iPhone 15 / 15 Pro
14.2 square inches
iPhone 15 Plus
17.1 square inches

iPhone 15 Plus is the larger calculated panel, excluding bezels, curvature, stands, hinges, and chassis.

Practical considerations

What should you verify before deciding?

  • Compare standard and larger iPhone viewport references.
  • Check form spacing, product cards, and mobile navigation.
  • Review screenshots where content appears higher or lower on the page.

Methodology and sources

Calculation method and evidence

Physical dimensions are calculated from diagonal and aspect ratio. Named-product hardware claims use manufacturer specifications; CSS viewports remain practical browser references.

How the geometry is calculated

Width and height divide the diagonal using the stated aspect ratio. Screen area is width × height, and PPI divides the diagonal pixel count by the diagonal inches.

Reviewed under the ScreenMetricLab methodology and editorial policy. Reference values are not a substitute for checking the exact model, browser, scaling, and accessibility settings you will use.

Frequently asked questions

Questions about this comparison

Does iPhone 15 Plus show more webpage content?

Usually yes because it has a larger viewport reference, but browser UI and zoom settings can still affect the live viewport.

Is the DPR the same?

Both references can use similar DPR behavior, but size and resolution still differ.

Which one should I use for QA?

Use both a standard iPhone and a larger iPhone reference for important mobile flows.

Continue the cluster

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Follow a shared device, move to a neighbouring size, or use the supporting calculators to verify the next decision.

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