If I recall correctly, there may not be a direct way to do this at least with the iPhone and the Smart 3D app I use with my ReSound aids. For an Android phone, you can see if these directions work:
but I wouldn’t be surprised if they don’t, since the general unpairing instructions for an iPhone and Bluetooth devices (Settings > Bluetooth > click the “i” icon next to the device, and select “Forget this device”) don’t work with Smart 3D app devices, because the hearing devices aren’t listed under the Bluetooth section of iOS Settings… I don’t know why; it’s just how the app is written.
With iPhones and Smart 3D, there is an indirect way to unpair the two. You do it by pairing another Bluetooth device in the Smart 3D app and use the slot previously used by the returned streamer.
Why do you want to unpair them? What’s your concern?
It’s not an issue that the returned device has a tie-in with your Jabras, because Bluetooth range is very limited generally, so that returned device will never be close enough to your aids again to connect up and transmit audio.
It’s not a network security threat.