Alva Troiano
Alva Troiano voted up Yo Kass' answer

As mentioned above, better coverage and often cheaper cost-wise are the two main advantages. In fact, most VoIP (voice over internet protocol) services allow you to make free calls.

This is especially attractive for international calls, which have traditionally been pretty expensive. I remember this was the main reason I downloaded Whatsapp, and I haven't looked … Read more