10-10-2016 03:59
10-10-2016 03:59
10-10-2016 08:20
10-10-2016 08:20
This is a list of compatible devices:
Android: https://www.fitbit.com/content/assets/onezip/images/devices/Fitbit_SupportedDevices_Android.pdf
10-10-2016 08:30
10-10-2016 08:30
@sumit747 - If you go to the Fitbit Compatible Devices page (Click here for Compatible Devices), you will see that they list the HTC Desire 516, 610, and 816, but do not list the 620G. So, it is apparently not yet supported.