a.Enable the Phone Call switch in setting of my smartwatch.
b.Add device on App Da Fit, find the MAC Address of this watch to pair, then it successfully connected between your watch and app.
c.If Android phone, sooner there will be one Pairing request appears by pop-up window, we tick the Allow access to your contacts and call history, and Pair, it will be done.
d.If Iphone, we need to directly search this device(bluetooth calling) name in the bluetooth setting of our iphone, then pair it.
Both Android and iPhone, we can view this device(bluetooth calling) name in your bluetooth setting of smartphone.