Hi. I was sent a Thunderbolt to replace my lost Droid Charge. The first unit I had didn't receive data well (rarely got 4G), so I was given a second replacement yesterday. This unit seems to have a problem accepting headphones. None of the headphones that I have fit into the jack all the way (a bit of the metal sticks out no matter how hard I try to push them in)...and the headphones that have microphones don't go in far enough for the device to recognize that there is a microphone. Is this a common problem...or do I need to go back and get a THIRD replacement unit? I didn't have the problem with the first replacement (the one that had the data/antenna problem). Thanks!