Bluetooth Receiver 4.0 [Apt-x Technology], Doosl Hand-free Calling Bluetooth V4.0 Car Kit Music Receiver, iPhone Bluetooth radio with 3.5mm AUX Port and 1A USB Car Charger (Silver) Recharge your devices while listening to music via USB port 5V 1A. Multifunction: connect via Bluetooth 4.0 with your phone to answer phone calls, allow you to call back the last outgoing call, or to reject the coming calls. [Apt-x Technology], Designed of unique appearance and made of high-quality materials, super clear conversation effect, perfect touch feeling. Bluetooth Receiver, it&rsquo;s convenient to control and built-in soft light which will not cause distraction in car, safe for driving. Car Bluetooth 4.0 receiver, an adhesive-backed bracket helps you easily mount the transmitter on the dashboard. 	 Dear Ram, We are sorry to hear that and surely would like to provide troubleshooting steps here to help the customers. 1. The bluetooth range is up to 30 feets without any interference between this item and your connected device. Please do not put the item in the pocket or place the other objects between the item and your device to ensure the effective signal receipt. 2.Please make sure you locate your device in front of the bluetooth receiver, the rear orientation does also impact on the connection. 3.Please kindly try with the different positions to get the best one.