A:Answer Presuming your device is not defective, make sure you've run through the usual suspects:
1) Are phone AND car stereo volume are set to at least middle level;
2) Have you selected "tape" on car stereo?
3) Is the song or app you've selected on your phone actually playing, not on "pause"?
4) Is the audio track itself functioning properly? (i.e., can you hear it through your phone speaker if you disconnect from the car stereo?)
5) Is the jack from the cassette adapter plugged all the way into your phone? Give it an extra push to be sure. This can easily happen with devices plugged into the audio jack.
If all those things are in place, and still no sound, then I suppose your device is defective. Hope you are able to work it out or get a replacement. :)
