Question: how do you connect your fitbit versa 2 to your phone?
Answer: Open the Fitbit app and tap your Account icon (it's your profile picture at the top-left of the app).
Tap Set up a Device.
Choose which Versa you have (we're using the Versa 2 in this example). ... 
Tap Set Up.
Tap Accept to agree to Fitbit's privacy policy.
Tap Next. ... 
Your phone will search for the Versa via Bluetooth.