Android
- Using the manufacturer's instructions, pair the Dellking speaker/mic to your phone
- Tap open the Zello app menu (3 vertical dots) at upper right
- Select Options
- Select Push-to-talk buttons
- Tap the Add (+) icon at bottom right
- When prompted, press the button on the Dellking to use as the PTT button
- The Dellking PTT Mic is added to your list of PTT buttons
- On the talk screen, turn on the Bluetooth option at the bottom left
- Test the button by using it to send a message to your Echo contact on Zello.