Hey, well my friend is in America and I live in the UK, so if I were to call my friend, vice versa, it would cost us alot of money. She has a BlackBerry and I have an Andriod, I know on Andriod I can use Viber, so using the internet, to call other Andriod friends, therefore costing nothing. Is there an App we both have (BlackBerry and Andriod) to allow us to call each other via the Internet? Thanks!