Just did. I can hear through the earphones but still doesn't work without the earphones after a quick inserts/removals.
I suspect it could be related to upgrading the OS.
When I was running .246 (already on my phone when I got it from ATT) I never experienced your problem. If you upgraded to the .246, try to reinstall it again. If that is not the issue, then its time to make a trip back to your carrier to get a new phone. It may be a defect in your phone more than an OS issue.
Either revert back to the previous build you had, or try upgrading to the .337 build. If neither works given what everyone else has suggested regarding the vole settings and plugging and replugging and removing earbuds and such, you may have a defective phone.
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