Dont waste your time!!

Does not work no customer support. If you want free calls try magicJack, just with a few setting it works great. Also another good app is TALKATONE works with your google account, if you have gmail account, get yourself a google voice then TALKATONE sign in with your google account and make free calls to US and Canada, even if you go overseas as long as you have wifi you can make and receive calls and text.

Tomtom Garmin about Linphone, v1.3