For iPhone 3GS Audio Jack Ribbon Flex Cable,Brand new OEM ,test well switch ,volume + and volume -..for sure good working . For iPhone 3GS Headphone Audio Jack Ribbon Flex Cable: 1. NEW & High Quality Product.2. Compatible Models: 3G Audio jack flex cable ]3. we use logic board test the open switch ,volume + and volume -.for sure each will be in good working .4. Fast shipping with good price .