Before BlackBerry is as well-known as nowadays, their target markets were only for business people. They used BlackBerry for work, thus youngster didn't have interest in having BlackBerry as their phones. But several years ago, BlackBerry had released a new application called BlackBerry Messenger. Because of this a lot of people, including youngsters, started to use BlackBerry.
With this messenger, people can contact a lot of people without paying any extra charge like SMS. BlackBerry has a pin called "BlackBerry PIN" which is to identify every BlackBerry phone. So when people change their number, the PIN will not change, thus people can still keep in contact with each other without knowing the new phone numbers.
So, this campaign is targeted youngsters and young adults, promoting the BlackBerry Messenger and the featured usage.