I know there are a few apps that mention this, but none are specific, and none give a definitive answer. I have a droid, and google voice. I have setup my 5th number as xxx-xxx-xxxx, and tmobile as the name. If I go into GV settings and select :use google voice for all of my calls", does that mean that they will all be free since they are using the GV# for both in and out calls? Thanks in advance for your help!