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
IMPORTANT: Support for A2DP Bluetooth profile required by Zello. Compatible headsets are most reliably identified by A2DP support mentioned in headset specifications.