Fix: Fitbit Versa 3 Not Connecting to Bluetooth
Sometimes the Versa 3 might not connect to phone Bluetooth even when it's switched on. To fix this, simply restart your smartphone, this should fix the problem.
If this doesn't work, you can turn off your phone Bluetooth and turn it back on. You can also try restarting the Versa 3. What worked for me was restarting my phone.