This adapter cable allows you to use headsets with a 2.5mm plug with any smartphone that has a 3.5mm headset jack. This includes most versions of the iPhone, Android smartphones and tablets, and Blackberry phones.
This cable is not intended to be used to convert your headset for use with MP3 players or analog headset output jacks foundn on computers.
Use with the following Plantronics headset families:
Adapter Cable Features: