In early 2019 I had difficulties with connecting to my Garmin Watch through bluetooth (with the Fairphone 2 in my case). I had posted here without succes. Bluetooth: my Fairphone 2 doesn't find my Garmin sports watch
since then I see this post in french, they are mentioning a patch but the latest post of April 2020 talks about a sporadic connection issue (in this case with Samsung S7) Garmin connect ne fonctionne pas