But the problem is that its not working currently, since its not an official launch. But you can sign up and as i also tried it on my Nexus 4 and I successfully registered my E-Mail id on Blackberry Messenger (BBM). The APK is actually quite useless as when you log in, it won’t connect to Blackberry Services, the network used to push all these bits and bytes around in real time.
The app is expected to have many of the features that are on BlackBerry devices. This includes the ability to send text and voice messages. Below is a demo from BlackBerryOS.com.
Why is BlackBerry rolling out BBM to iOS and Android users now?
You’ll have to use it on a whitelisted device in order to get it to work but You can download it anyway if you just want to check it out. Grab it here, poke it a few times,then let it rest as we await the real deal in the days to come.
****UPDATE: Official BBM Released****