I always listen to music with my phone using ear buds and recently, when I plug in my ear buds, the sound coming out of them crackles and sometimes, the audio playing ones out from the phone's speaker. I know nothing is wrong with the ear buds, because I have used tested them on other devices and they work fine. I laso tried using head phones on mu phone and the problem is still present. Is there something wrong with the headphone jack? How can I fix it?