I have found that the Heart Rate Sensor will stop working in two senarios:
Rebooting the watch does not fix the sensor issue.
My current work around is to change watch faces. The watch then seems to reset it's sensors.
Has anyone else had this issues or has this been raised as a bug? Whilst it is hard to replicate, I have experienced this on quite a few occasions.
Fitbit Developers oversee the SDK and API forums. We're here to answer questions about Fitbit developer tools, assist with projects, and make sure your voice is heard by the development team.
The hrm doesn't work for the standard clock faces in this scenario either, so I am not sure that this would help.I will add it to my code anyway, as it cannot hurt
Best Answer