Samsung Galaxy A70
When logged inside my home network I'able to see a complete list of devices and listening on any of them. However, when going outside(like GSM mobile data), I'm able to see that only one device(I think the one that is currently active in house and playing sound from other phone that use my spotify credentials). The same thing is happening on linux spotify client(is able to see only one device in list). I'll attach two screen shots (one inside home network, one în GSM mobile data). I would expect to see them all.
For me, this is an very smart feature and worth each peny.