The phone wasn't dropped or anything - the headphone jack just stopped working. I've tried three different ones and the sound comes out the speaker no matter what. I've also rebooted and tried turning it off and then on with the phones in - no joy. So I guess my next step is the dreaded factory reset, after I get done with a backup, unless anyone has other ideas? I've looked in there and don't see anything unusual. I'm wondering if this is the kind of thing that they will replace the phone over too. It seems like it should be covered as the warranty says "against defects in materials and workmanship, under normal consumer use.." But I'd really rather just have it start working again.