I have decided to re-purpose my Original Droid as a SIP phone. I have no Verizon contract on the phone, but it'll never leave my house so WiFi is fine. My question is, since I cannot use it as a cell phone (again no contract), is there a way to disable the cell radio of the phone to save on battery life? There really is no sense having that radio enabled, it just uses battery life. Thanks in advance.