In case you have not tried before lapwings, we have to tell you that you have been missing a lot. The app does not require registration to all and is completely free. Besides, it has a built-in text messaging for sending messages to other users lapwings and sound quality it offers is better than what you'll get a call placed on a line wirelessly. Add to this its ability to integrate seamlessly with the list of telephone contacts and you have a nice little app you'll probably end up with more and more frequently every day.
So if you have not, take Viber the Android Market and see what over 12 million users have been enjoying Viber. As with all BlackBerry owners out there, do not be jealous as an official version of the BlackBerry coming down the road.
