Our team introduced SLDP low latency playback protocol several years ago as a replacement for RTMP due to sunset of Flash. It's a WebSocket-based technology which can be played on any browser platform that has MSE. Up until now, this was the reason why SLDP live streams couldn't be played on iPhones since they didn't have MSE, even though, it played on Windows, Linux, macOS and even iPads. The only exception was Opus audio-only playback on iOS.
Now with the latest releases of iOS 17, iPhone iOS has full support for MMS - Managed Media Source - which provides necessary capabilities to make the MSE-based playback possible.