That is interesting. Airplay was definitely blocked on IOS devices last time i checked. Does the samsung phone to Samsung tv connection use the built in android casting technology, or do samsung use their own proprietary tech for that do you know?
I believe it's their own proprietary stuff but I'm not 100%. I haven't tried casting to a Samsung TV from an IOS device but when I tried to get my Dad's Chromebook to cast to their Samsung TV it didn't want to know (for anything, not just a particular app), which is what leads me to think it's proprietary. I didn't spend much time trying to make it work though, to be fair.