Set up Bluetooth PTT accessories in Zello 1. Pair the Bluetooth device with your phone 2. Open "Options" > "Push-to-talk button" 3. Choose the "Bluetooth PTT control device" from the drop down menu 4. Make sure that the bluetooth icon is selected in the bottom left corner Zello Support October 26, 2016 16:09 Follow Have more questions? Submit a request 0 Comments Article is closed for comments.