iPhone SE (3rd gen) screen size
iPhone SE (3rd gen): 4.7″, 750 × 1334, 326 PPI, 375 × 667 CSS viewport at DPR 2.
To proportion
4.7″
- Display size
- 4.7″ (11.9 cm) diagonalofficial
- Resolution
- 750 × 1334 pxofficial
- Pixel density
- 326 PPIofficial
- Aspect ratio
- 16:9calculated
- Physical size (display)
- 2.3″ × 4.1″ (5.8 × 10.4 cm)calculated
- CSS viewport
- 375 × 667 pxreference
- Device pixel ratio
- 2reference
- Release year
- 2022
For developers
/* iPhone SE (3rd gen) — portrait reference, not a breakpoint */
viewport: 375 × 667 CSS px
panel: 750 × 1334 · DPR 2
/* Test immediately below and above your layout breakpoints. */Tailwind breakpoint
base
0px-639px
Bootstrap breakpoint
xs
0px-575px
Image slot example
750 × 422
375px wide at DPR 2
Responsive testing plan
iPhone SE (3rd gen) responsive workflow
Use the 375 × 667 CSS px at DPR 2 as a real QA target, then pair it with nearby widths for regression testing.
Values marked official come from manufacturer specifications; calculated values are derived from them; reference values are developer layout references and can vary with browser, zoom and operating-system settings.
Sources: Apple Support · github.com · Facts reviewed 2026-09-01
Phones with a similar screen size
Devices with a similar viewport
Devices with a similar DPR
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