Hello there,
Thanks for posting on the Community.
Can you let us know the exact make/model and OS of your device along with the Spotify version you use?
On another note, are you the host of the session or is it someone else's? Are you using some specific app for the phone calls you mention?
Lastly, we'd like you to sends us a video where we can see if you're forced to join a Group Session while in the phone call and what happens after you end the call and leave the session. This will help us understand better what you're seeing.
We'll keep an eye on your response!
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