I have my xz coupled with my Gear S3 and it has worked.
Then suddenly no connection could be established.
The Gear S3 worked on another mobile phone.
After several reset actions, I have in the Bluethooth 2 entries "Gear S3 (94DD)" and "Gear S3 (94DD) LE"
No other device sees the second entry when devices search.
Why currently the connection again goes I do not know unfortunately.
Where does the 2nd device come from?