I swear, I'm not a complete idiot with most tech stuff, but I cannot for the life of me wrap my head around this voip/sip/pbxes stuff. Some background-I have no home Internet or landline phone. I do have wifi thru my neighbor being generous with his wifi password. I also do not have 3g in my area, and at home, my cell service is so-so. SO-we have been having some bad weather lately which had basically rendered everyone in my apartment complex with no cell service. ALL I want is to be able to make and receive calls over wifi when I have no cell service. That's it. I searched the forums here and did the following -set up a google voice number, downloaded the google voice app, downloaded csipsimple. Now I'm lost. I have no idea what sip even is, what pbxes are/is, what else I have to do. Please keep in mind that before I got this phone, I hadn't had the Internet in about 5 years, so setting this stuff up may be simple for you all who have been 'in the loop' this whole time, but I'm a bit overwhelmed. Seems to me when I set up google voice, make a call and select "call using google voice" it should, you know, make the call with google voice, but apparently this does not mean use google voice over wifi. I just don't get why. sorry for my extreme noobness-please help? Thank you all in advance.