Richard wants to know if there's an app to call 800 numbers while overseas. Leo says that any app that lets him call phones will work. He'll need an app that supports SIP clients. Skype would if he has a Skype Out account, and that would require putting down a credit of $10 to enable it.
Rene wants to cancel her wireless service and just use Wi-Fi to make phone calls. She also wants to just buy a data plan and use VOIP to make calls, but she can't seem to do that. Leo says one way is with Skype. She can Skype out/In. She even get a regular phone number through that. Tango, Viber and Line can also do it.