iPhone 18 Plus
Large-format standard iPhone with Dynamic Island
430 × 932 ptPhysical 1290 × 2796 pxDPR 3x6.7"
Auto
Live Presets:
Site Headers Restrict Iframes
sends X-Frame-Options or CSP headers blocking iframe embedding.
Super Retina XDR OLED 60Hz·6.7" display·Aspect Ratio 215:466
env(safe-area-inset-top: 59px)Expert Q&A
iPhone 18 Plus Testing FAQs
Common questions about responsive web design on iPhone 18 Plus.
What are the CSS safe area insets for iPhone 18 Plus?
The iPhone 18 Plus uses env(safe-area-inset-top) for Dynamic Island or Home Button clearance, and env(safe-area-inset-bottom) for the swipe-to-home indicator. Always set font-size: 16px minimum on inputs to prevent iOS Safari auto-zoom.
What is the viewport resolution of the iPhone 18 Plus?
The iPhone 18 Plus has a CSS viewport of 430px × 932px at a device pixel ratio of 3x. The physical resolution is 1290 × 2796 pixels.
Why does my website zoom in on iPhones?
iOS Safari auto-zooms into form inputs with font-size under 16px. Always set font-size: 16px or larger on all inputs. Also ensure your viewport meta tag includes width=device-width, initial-scale=1.0.