I'm a new user of Refsix. I'm using a Garmin Forerunner Watch. I'm having constant problems getting the bluetooth connection to work, and consider myself tech savvy. I have finally got a pairing between watch and phone after uninstalling on both, performing a hard reset on both, and removing my 'connected device' entry on my online account. However now they are showing as paired, the actually sync fails with a bluetooth out of range error. Other bluetooth stuff works fine. Looks like some sort of B/T driver issue with Refsix App and the Garmin tech. to me. Summary: Apple Great, Garmin flaky.