Every time I want to use my Vizio Bluetooth speaker I have to restart my phone because for some reason it just doesn’t pair with it anymore. I have already reset the phone’s settings and lost all my Bluetooth passwords and information but that did not help. I have also powered down the Bluetooth speaker to no avail. When I restart my phone it pairs with the speaker once but then never again. When I tap on the name of the Bluetooth device in the list I get a microsecond of the word connecting in green for little the device but it never does connect.
I recommend taking a look at the suggestions in this thread
Moto G4 Bluetooth Failure