Since around October 5, the App Store has stopped delivering App Preview videos for the iPhone platform. This is not a settings or device issue — it's visible in Apple's own server response.
Reproduce in 30 seconds, no device needed:
https://apps.apple.com/us/app/candy-crush-saga/id553834731?platform=ipad — preview video present (plays on hover). Same URL with ?platform=iphone — no preview, no poster frame; carousel starts at screenshot 1. View source: the ipad response contains an apptrailers.itunes.apple.com/…/*.m3u8 reference; the iphone response contains none.
Same result for Wordscapes, my own app (LineSpell, id6795994376, preview verified in Media Manager), and the UK storefront.
The Internet Archive has the Candy Crush iPhone page carrying the stream in every snapshot from March 2025 through Oct 5, 2026 12:06 UTC (web.archive.org/web/20261005120601id_/https://apps.apple.com/us/app/candy-crush-saga/id553834731), so this began between Oct 5 and Oct 8 — coinciding with the Asset Library / creative-assets launch on Oct 5.
On device: iPhone 17 Pro (iOS 27.0.1) and iPads on iPadOS 26.6.2 / 26.7.1 show no previews or poster frames for any app. An iPad Pro 12.9" on iPadOS 16.7.16, same Apple Account and network, shows all of them. In-App Event videos play fine on the affected devices.
As of Oct 8, 1:30 PM ET: still absent for Candy Crush and LineSpell; NYT Games' iPhone page has a stream again, so it may be recovering progressively.
Filed as FB25109947 and Developer Support case 102990230664. If you're seeing the same, please add your FB number here — and if your iPhone previews have come back, say when.