I have a Garmin Edge 810 that I use for Cycling and have just got the Vivoactive watch.
The Mobile app stays connected to the watch during the day for notifications etc and works well, the problem comes when I then get on my bike wearing the watch and the app will only connect to one device at a time. Both devices show connected to the phone but the app will only connect to one at a time.
I need to turn off Bluetooth on the phone to allow it to connect to the 810 for my ride and to upload at the end.
I'm not sure if the app should connect to both at the same time, has anyone else experienced this. Or a simpler way of telling the app what device you want connected and when as turning off Bluetooth on the device you don't want to use is a bit long winded way to do something that should just work.