I had an odd issue with my Roam whilst on holiday recently.
I took the Roam with me for hotel room entertainment in case our holiday was a washout.
The first night all was fine. I was able to use the Roam via Bluetooth in the hotel room- no problem. Functioned as expected.
I plugged the Roam in to charge overnight, and that's where the issue began.
The next morning I could not get my phone or my partners' phone to find the Roam on Bluetooth. I probably spent an hour wrestling with it that morning and later again in the afternoon. The phones just would not find the Roam on a scan.
Eventually out of frustration, I connected the Roam to the hotel's free wi-fi and reconnected my Sonos S2 App to the hotel WiFi. After that, I was able to connect to the Roam just fine. But now I will have to reprogram all my other Sonos speakers (I have a lot of them) when I get home. More than a bit annoying!
I can't fathom why this happened but I assume the Roam must have automatically linked itself to the hotel WiFi, perhaps after I turned it off at night to recharge.
This is a problem Sonos needs to be aware of so that they can fix it. Not only is it an annoying problem, but I can't help think this is a security risk.