Is whatsapp ,messenger ,facebook, skype uses webrtc for audio video streaming (for video confernce) in ios

I am using jitsi- meet for video conferencing app so if I use jitsi-meet URL to load on webview it says "Webrtc is not supported for your browser" , I just want to know what should I use to support webrtc in webview (In Ios swift)I am using jitsi- meet for video conferencing a