Howdy, I've been searching, searching, searching for an app that will work with my LG Optimus S running Android 2.3.3 that will block "unknown" or private calls, but I can't find one that works. If I could find one that blocks calls not in contacts by sending those calls to voicemail, that would be great. I'd be willing to pay for such an app, as long as there was a trial period of some sort so that I could verify that it works. I'm starting to think that the Optimus S has some problem doing something like this. FYI, I've tried "Call Control" and "Mr. Number" apps. Both are supposed to allow calls from my contacts through and send those not in contacts to voicemail, but both blocked my contacts too. I've tried adding a contact named "Unknown" to my contacts. That way I could use the stock android option to send the call directly to voicemail. I went through Google on a PC to make the phone number "Unknown" and synced it with my phone contacts, but that didn't work. I also changed the phone number for the contact "Unknown" to -1, -2, and 0000, but none of these worked either. Anyone have any ideas or suggestions? Thanks for any help you can be in advance!