Okay, the vivofit may be an old device but once connected it synchronizes. But when trying to connect a vivofit it simply does not work anymore. The vivofit3 has the latest 3.40 software version. The devices does communicate with the Iphone because changing the screen can be done 20 times in a row. Transferring step data to the app however simply is no longer possible. I have to throw away a 70 euro device. Support tells me that not using the vivofit for a long time causes it to break. Hilarious.
