If there is no response or some on-and-off reaction when you are using the headphones of your mobile phone to listen to the music or answer calls， I believe maybe it is time to repair or replace the earpiece speaker flex cable. Here we have a good recommendation for you. Our Replacement Part Earpiece Speaker Flex Cable Ribbon for Samsung Galaxy S4 GT i9500 is designed to solve lots of problems， such as insensitiveor poor part， no voice when you are on hands-free calling. Professional disassembling tool is strongly recommended. Make a wise purchase now!                                    Features             All flex cables have been tested before shipment<br> This is the best replacement for the original flex cable at reasonable price and with excellent quality<br> It’s the connecting cable that links different parts in your device<br> If the headphone does not work correctly， you probably need to replace the flex cable<br> Please make sure what your phone problem is before making the purchase<br> Designed to solve lots of problems， such as insensitive and poor part， no voice， no response or on-and-off reaction when you are listening to the music or on hands-free calling <br>                                                            Specifications             Material     Aluminum Alloy & Plastic    <br> Dimensions     (0.79 x 0.39 x 0.08)" / (2 x 1 x 0.2)cm (L x W x H)    <br> Weight     0.18oz / 5g    <br> Compatible Model     Samsung Galaxy S4 i9500    <br> Application     Replacement and Repair Part       <br>                                                             Package Includes            1 x Ear Speaker Earpiece Flex Cable Ribbon<br>