How to turn off Always Connected
The Fitbit app always tries to establish a permanent and continuous connection between the phone and the tracker.
It does not work correctly in some phones, so this must be prevented.
If "Always Connected" in Fitbit app is enabled, the Fitbit app wants to force this faulty connection.
1 Open the Fitbit app and Tap on your tracker
2 ENABLE All-Day Sync
3 Scroll down, and DISABLE Always Connected, and ENABLE Keep-Alive Widget