Creative Sound Blaster EVO Zx Manual page 13

Connecting to a Mobile Device (4-Pole Analog Mode)
If your headset runs out of power, simply connect it to a mobile device via the 4-pole analog cable.
Enjoy the power of the Sound Blaster EVO Zx entertainment headset on-the-go with portable smart
devices including iPhones, Android phones and tablets.
Note:
Only the microphone and the Multifunction button function in 4-Pole Analog Mode.
The headset works without consuming battery in this mode!
Using Your Sound Blaster EVO Zx 12