The Sanyo Zio by Kyocera Andriod-based cellphone can download a Google Voice application from the Google Marketplace but it still requires cellular connectivity in order to work. However Google Voice supports directing an incoming call to a VoIP provider named Gizmo (that Google recently acquired) via SIP. I am sometimes in locations where my cellular provider's roaming coverage is spotty at best. But I usually have Wifi access from a hotel room. I have downloaded the 3CXphone for my Android. I was hoping someone could give me the SIP settings for the 3CXphone to successfully register with Gizmo. That way, I could receive calls placed to my Google Voice number via the 3CXphone going through the Gizmo Voip service. Can anyone help me out with this? Thank you in advance.