Installing Android Apps On BlackBerry Passport
The BlackBerry Passport and BlackBerry 10.3 OS have nothing to do with Google or its Android platform. But thanks to the power of QNX, BlackBerry users can install Android applications directly onto BB10.3-powered units like the BlackBerry Passport (note: older versions of the OS require you to side-load the applications).
This means all you have to do to get Android applications (things like Chrome, Drive and Instagram) up and running on your BlackBerry Passport is download a client like SNAP –– SNAP gives you full access to most of Google Play’s applications direct from your BlackBerry Passport, which, obviously, is bloody awesome –– or browse through the numerous third-party stores that offer APK files for BB10, such as:
Source : http://www.knowyourmobile.com/mobile-phones/blackberry-passport/22752/blackberry-passport-tips-tricks-getting-most-out-blackberry-priv