all. The phone must have a ground wire, and microphone reverse melded inside the 3.5mm plug. in order for this handset to work. overstockcustomercare1 on Nov 7, 2012 Can an adapter be purchased for use with a Blackberry Smart Phone? adelaide1 on Nov 7, 2012 Please enter a valid question. This is compatible with all Apple and Blackberry smart phones. Some Android, and windows phone will work with this product, but not all. The phone must have a ground wire, and microphone reverse melded inside the 3.5mm plug. in order for this handset to work. overstockcustomercare1 on Nov 7, 2012 does this work on the Samsung Replenish? loveejulliex3 on Aug 26, 2012 Please enter a valid question. Thank you for your interest. This item is compatible with a variety of applications. However, to find out specifically if it would be compatible with what you are interested in, please contact your provider. Please feel free to contact us again with any further questions. overstockcustomercare1 on Aug 20, 2012 I have a Samsung Galaxy S Epic (Sprint),I bought one of these already but from some where else brand new and i can hear but other people cant hear me so what is wrong with it? Do you know if i need an adapter and if so where can i get one? lsino on Aug 12, 2012 Please enter a valid question. We are unable to disclose the manufacturer of some of our products; however, Overstock.com stands behind every product we sell. When