If you are traveling abroad and have a local SIM card, you can use Voxofon to make cheap calls to home. Just make sure your Voxofon app recognizes your new number after you install the new SIM card.
On your Blackberry:
1. Open the Voxofon app
2. Press “Menu”, then select “Options”
3. View the phone number under “This Mobile Number” and make sure it is correct