Hi Khaled, Sorry to have to ask this one again. I've downloaded the My Bluetooth Handsfree app, and i'm not sure if I've done this correctly. I presume the phone needs to remain paired to the audio head unit and still enabled for telephone? I've got the phone paired to the head unit, and in using the app, it still errors with talking not supported on the head unit. This is a Samsung Galaxy S4 4g unit (so i'm not 100% sure if its the firmware of the phone, or the head unit. Even with the my Bluetooth handsfree it still does the same thing. Just wondering how you had the setup between the phone and the head unit configured. Did you have it paired? as the app doesn't recognise the pairing on the phone to the head unit. Which makes me think the phone might be causing some issues. Btw the paid version seems to be the same without the ads ;-) no real additional new features on that.