MobileVoip lets you make free or cheap calls via Wifi or 3G to national or international destinations. Save on your mobile phone costs right away by using this application. Simply install MobileVoip, register with one of the many supported VoIP brands and make free calls to your friends and family abroad. If your selected destination is not among the free destinations, MobileVoip calls are still very cheap. MobileVoip offers either free calls or the best rates you'll find in the marketplace. MobileVoip requires a working microphone and speaker such as a headset or built in microphone and speakers. MobileVoip will continue your call, even if it is running in the background.