Hi
My sons Vivofit jr. 2 stopped synching.
It was a long time since battery change, so we installed a new battery.
Now when I try to pair the device ( I deleted it under bluetooth on my phone)
I choose Pair now in the app
Next
Long press the vivofit
Found - Nubmer is correct - Press Yes
Finalizing fun
Bluetooth pairing request : Press Pair
10-15 secunds later: it looks like the band disconnected. Make sure the band is in range and shows the sync icon.
Under Bluetooth the Vivofit is now present again, but can sync