375 × 667 viewport: which devices use it?
375 × 667CSS px · 9:16
375 × 667 is the CSS viewport of 1 device in our research, including the iPhone SE (2nd & 3rd gen). It’s the #12 most common phone screen size worldwide (1.77%, Aug 2026). Turned sideways it becomes 667 × 375.
| Device | CSS viewport | DPR | Physical pixels | Year |
|---|---|---|---|---|
| iPhone SE (2nd & 3rd gen) | 375×667 | 2 | 750×1334 | 2022 |
Check your site at 375 × 667
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Designing for 375px wide
Breakpoints
Tailwind: base styles only (below sm, 640px). Bootstrap: xs. Sideways (667px): Tailwind sm (sm: styles apply).
Room for content
343px with 16px side padding, 327px with 24px. Anything fixed wider than 375px makes the page scroll sideways (how to fix it).
All devices 375px wide, whatever their height.
Nearby sizes
Questions people ask
Which phone has a 375 × 667 viewport?
iPhone SE (2nd & 3rd gen).
Is 375 × 667 the screen resolution?
No, it’s the viewport in CSS pixels. The physical screen has more pixels: the iPhone SE (2nd & 3rd gen) is 750 × 1334 (DPR 2).
Which breakpoint does a 375px wide screen use?
Tailwind CSS: base styles only (below sm, 640px). Bootstrap: xs.
How common is 375 × 667?
1.77% of mobile screens worldwide (#12) in Aug 2026, according to StatCounter.
Guides that help
- What is a viewport? CSS pixels vs screen resolutionA viewport is the area your page is laid out in, measured in CSS pixels, not screen pixels. See real numbers from iPhones and MacBooks, then check yours.Guides · 8 min read
- How to fix horizontal scrolling on mobile (12 causes)Page wobbles sideways on phones? The 12 usual causes of horizontal scrolling on mobile, a fix for each, and a console snippet that finds the culprit fast.Fixes · 9 min read
- Responsive breakpoints in 2026 — the widths that matterWhere 123 real phones, tablets, laptops and monitors land in CSS pixels, which responsive breakpoints actually matter in 2026, and which screens to test.Guides · 8 min read