I have a Garmin 235 associated with a Galaxy S9 phone with which I can synchronize all activities, steps and the rest except heart rate and sleep data. can someone help me? Thanks Davide
Does it synchronize completely over the USB cable and Garmin Express? Also check if the HR & Sleep data is not visible on Garmin Connect Web. There is another user reporting recently in another thread that he is not having the sleep data in CG Mobile, while having them there in GC Web.