Since Friday, my phone alerts every 30 minutes or so that I have voicemail activities received, and that I have entered an invalid password. I have an LG enlighten. My password to my audio voicemail works just fine, I've checked about 10 times just to be sure. I have tried a soft reboot, I have pulled the battery, I have done the *228 software update. Apparently this is linked to visual voice mail, which I don't even subscribe to. I have tried my last 4 digits of my phone number, 9999, 0000, and most other suggested permutations. Has anyone else had - and been able to resolve - this problem without wasting hours with tech support? Thanks in advance for any help!