I just bought two S1 Pro speakers and had no issue connecting to both in party mode in stereo using my iPhone X and Bose Connect 6.3.1.
I had my wife install Bose Connect on her identical phone and by that time 7.0 was the available revision. Even if I turn off bluetooth on my
phone and power cycle the speakers and activate the button on the speakers to connect I can not connect to them on my wife's phone using
the Connect app. I can see them in the bluetooth available device list and connect to one or the other without using Bose Connect. But the
app will not connect to them.
I could let my phone update to 7.0 to prove it but I need the functionality and want to solve the problem using my wife's phone first.
Any suggestions? Is there any kind of known issue with 7.0 for iphone and using party mode in the app?