So the great thing is you can call you mates or keep in touch with your family completely free if they sign up to Freewire.
When you want to call those slow-on-the-uptake people still sticking to their old-fashioned handsets and networks, however, you still have to pay.
Not much though. UK calls are less than 1p per minute, and even calls abroad are pretty competitive compared to other networks. Here's a quick snapshot.
For an in-depth look at our rates for all destinations, click here.