BB Curve :: Can't Make Phone Calls

I have a 8330 curve that was originally for sprint but unlocked to verizon. I have 37403473 bytes free before the battery pull and after replacement i have 38160293 bytes free after replacement. the applications i have are verizon backup assistant, BB core app, BB system software, BB app world, BB attachment service,japanese characters, korean characters, maps. BBM, simplified chinese, traditional chinese, brickbreaker, browser, documents to go, ethink memory, email setup, facebook, memo pad, myverizon, password keeper, phone and tasks.I do not know what a bt model/version is.

My problem is that I cannot make phone calls. my phone will say connected and the person's phone will ring but when the call is 'connected' neither one can hear the other. the only time i can make phone calls is after a battery replacement, if i have the phone plugged in i may be able to answer for up to an hour, but with it just sitting off the plug it may only be minutes. but it does not disconnect phone calls, i can be on the phone for an hour, without being plugged in and i can continue with the call.