Make a phone call using the smartphone designated for making a phone call.
If no dial tone is heard via the headset, switch the call device to the headset using your smartphone or mobile phone. With an HFP connection, you can do this by pressing the 
POWER button on the headset for about 2 seconds.
To receive a call
When an incoming call arrives, the music playback pauses, and a ring tone is heard via the headset.
Press the 
POWER button on the headset and talk using the microphone. To end a call, press the 
POWER button on the headset to switch back to music playback.
Note
When no ring tone is heard even if an incoming call arrives, stop music playback. When ringing, press the 
POWER button and talk.
To disconnect the call
Press the 
POWER button on the headset to switch back to music playback.
Related topic
Pairing and connecting with an Android smartphone
Pairing and connecting with an iPhone
Connecting with a smartphone by
