Both phone A and phone B were connected to Spotify, under same Spotify account. Phone A playing.
Sony XM4 were connected to both phone A and phone B. Sound coming from phone A.
Decided to do a Close All on phone A.
Spotify closed on phone A. Music stopped on XM4.
Spotify on phone B can’t play on XM4.
Decided to restart XM4.
XM4 can’t be switched on.
Removed Suntaiho magnetic USB-C charging plug from XM4.
Managed to switch on XM4 and reconnected everything.
Plug Suntaiho magnetic USB-C plug back in.