A: Pair the first device with ZEB-PREKSHA 2.0 headset.
Once the connection is complete, turn OFF the BT in the first device.
Now turn ON the BT of the second device and pair it with the earphone.
Once paired, simply turn ON the BT of the first device and it will automatically connect to the headset. Thus two devices would now be connected to the headset.
A: +5V DC.
A: When the headset is connected to a smartphone, tap and hold (till you hear a beep tone) to wake up the voice assistant of your smartphone.