Headphones not working

[oxblud]

Anybody else has problems with their headphones? I was using the included headphones (since it's illegal in my state to talk on phone w/o one while driving) & it stopped working. Ppl can hear you but you can't hear them. I did a hard reset this morning & it worked again....until 10 mins ago. I don't know if this is a software issue or hardware. I'm assuming software since the microusb works for me to charge the phone. Somebody know?