If you have any of the above Samsung models, before you use a standard hands free headset with your Samsung Gravity Smart cell phone, you will need to plug in the 2.5mm audio adapter in order for the headset to work. Just plug this audio adapter into your cell phone to convert the audio. This adapter allows you to use a 2.5 headset with your Samsung phone.
Easily installs; simply plug the audio adapter into your Samsung Gravity Smart cell phone audio jack; then plug in any 2.5mm, two ring headset into the audio adapter
One year warranty
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Original Samsung Gravity Smart Hands Free 2.5 Audio Adapter