>>Thank you for your response.
You are welcome. You might not like the follow-up.
>>What is an FDR?
An FDR is a factory data reset. When there are updates, yes, it's a good idea to perform an FDR, because the state of anyone's phone may be such that an OTA (over the air) update doesn't take all the way, and some stale memory locations lead to bizzare behavior, and only the FDR returns the device to a state the developers know as known "good" before you start customizing.
>>I can't return the phone. I bought it used and had if flashed to page plus. Could it be a software issue? Maybe with the flashing or an update?
Definitely yes it could (but it could also be HW), and yes to flashing and yes to an update. The thing is, for the first question, generally performing an FDR would clear a bizzare problem like this, and if not, then it would be considered a HW problem...
>>There where some app updates done last night. I didn't think about it this morning. I just ignore them mostly.
What app updates? Maybe uninstall all custom stuff, power-cycle phone and hope that is it. You have a device that's been flashed to a custom / non-standard ROM. I don't know how to advise you exactly. I *THINK* an FDR will be safe for you, but then again - I cannot be certain. And you can't return the device. Ouch. That's not a good situation to be in. It's a used device... It might have had a mechanical defect in the Headphone jack to begin with right - I mean, why is the device being sold used?
It's possible you were taken advantage of by the seller or by the person doing the flashing.... I'd contact that person / persons... The device should be considered defective unless the seller and/or the person doing the flashing can prove otherwise. If they are honest people, they'll work with you. If not, then they won't.
>>Does anyone know of an app that will turn the off the headphone jack?
Maybe the program [**********] (concatenate sound and about), but I'm not sure. I personally don't have experience with a program that inhibits the headphones like that. But, I don't know if that's a solution.
Hopefully someone more savvy than I can aid you.