[Y-bar]

I have a pair of such wireless speakers, and experience it, and the engineers at the speaker company which the the customer support escalated me to is adamant that they do not send any such command. It stops if I change the category of the device in iOS Settings, leading me to believe the culprit is indeed Apple.

[mynameismon]

Well, a good way to test this is hooking up wireshark

[hackmiester]

THAT is intriguing. Which setting makes it do it vs not do it?