Most BBM users finally have access to the app's video calling capability. BlackBerry has released the feature for Android and iOS in Asia-Pacific, which is apparently home to its biggest userbase. The company said it made cross-platform video calls available in the US and Canada first, because it wanted to be able to fix bugs before it reaches more people. Since video calling is now stable, the phonemaker can roll it out to the rest of world.While BBM isn't as popular as its newer, shinier rivals like Messenger or WhatsApp anymore, BlackBerry is still developing new features for it. In fact, this release is but a small part of a bigger rollout. Later this summer, the company will launch the capability to register for an account using a phone number, among other things. Android users will be able to share larger videos, as well, while those on iOS will be able to mute group notifications.