Just did a run with my forerunner 620. Transferred via WiFi OK. But now on Garmin connect android, although the hr graph ok, the average hr and max hr in the summary page is not right. Average should be about 140 - 150 BPM, summary shows 79.
UPDATE: Ok. The bug is that the units in the summary page of Connect - Android shows "bpm" even when your settings are set to "% of max" for the heart rate. So, the number was correct (79% of max), but the units still say bpm. A minor bug in Garmin Connect Mobile for Android.