You can pair your HTC One M9 with Bluetooth® accessories such as headsets and speakers. Here, we show you how to pair with a Bluetooth headset.

Touch Apps.

Touch Settings.

Touch Bluetooth.

If Bluetooth is off, touch the Bluetooth slider to turn it on.

Make sure the headset is in pairing mode and in range.
Touch the name of the Bluetooth headset.

The Bluetooth headset is now paired and connected.