And why is it that on different phones, one can see all the speakers and on another only one is reachable! Really beginning to hate sonos, sad really coz there was a time that I would have recommended it to everyone. Not anymore, I'd warn people to avoid it like a plague! This app / system continues to drive me insane, very often now when I open the app nothing appears apart from a series of grey sweeping placeholders where things should be. Frustrated to hell, sort it out Sonos!