Before you reset your BlueAnt device, it is important to first remove the pairing information from your phone and refresh your phone's memory:

1. Go to the Bluetooth menu on your phone.
2. Delete any pairing information associated with your BlueAnt device.
3. Now switch your phone off, wait for a few seconds, and then switch it back on again.

You are now ready to reset your BlueAnt device:

1. Make sure the S1 is turned off. You can tell whether the S1 is on or off by looking at the light on the front. If the light is on or flashing then the S1 is on. Turn it off by holding down the green Multi-Function button for about 5 seconds.
2. Hold down "Vol +" and the green Multi-Function button until you hear a loud siren/distinctive tone.
3. The S1 will turn on. Hold down the green Multi-Function button for about 5 seconds to turn it off again..
4. The S1 has now been reset: all pairing and other information has been deleted. When you turn the S1 back on again it will go straight to pairing mode.

You will now need to re-pair your phone with your S1.