Thanks for reaching out.
Note that the location of the permission settings vary from device to device, but for Spotify it's generally found under Mobile Settings> Apps> Spotify> Permissions. If Spotify doesn't resume after a phone call, it's a good idea to allow everything you see there. Make sure to restart your device after toggling the setting.
If that doesn't fix things, we recommend that you do a clean reinstall of the app on the device where this occurs. This step lets you start afresh with the latest app version by removing any corrupted files from previous installations.
Hope this helps. Keep us posted on how it goes.
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