Shopify Video Autoplay Not Working on Mobile: the muted and

Mobile browsers only autoplay video that is muted and set to play inline, and Shopify's default

iOS Safari and Android Chrome only autoplay a video that has both the muted and playsinline attributes, and they never autoplay with sound.

Dawn's product gallery uses deferred media by design, so it shows a poster and waits for a tap; autoplay there needs a template change or an app block.

Setting muted through JavaScript after the element exists often fails; set the property before calling play and handle the rejected promise.

iOS Low Power Mode and Chrome Data Saver block autoplay regardless of markup, so always ship a poster frame and a visible play control as the fallback.

Why does my Shopify video autoplay on desktop but not on my iPhone?

Desktop browsers are more permissive, and Safari on iOS has blocked autoplay with sound since iOS 10.

Shopify Video Autoplay Not Working on Mobile: the muted and

The full guide has the formats, the deadlines and the worked examples.