iPhone 16e Screen Size & Viewport

Why this viewport matters

When a user visits your site on the iPhone 16e, the browser reports window.innerWidth = 390 and window.devicePixelRatio = 3. Your CSS media queries match against the 390px CSS width, not the 1170 × 2532 physical pixel count of the panel.

At 390px it hits no Tailwind breakpoint (base styles only) and no Bootstrap breakpoint. Rotated to 844px it moves to Tailwind md, so check both orientations.

For sharp full-width images, serve a source at least 1170px wide (390 CSS px × 3 DPR) through srcset and let the browser pick it.

/* iPhone 16e: 390×844 CSS px, DPR 3 */
@media (max-width: 390px) {
  /* styles for this width and narrower */
}

@media (min-resolution: 3dppx) {
  /* serve high-density assets */
}