BlackBerry Passport - How to install apps from unknown sources
Some apps are not available on the BlackBerry World or Amazon's appstore (for Android apps), so before installing them on your BlackBerry Passport, you will need to enable a small setting:
- From the homescreen, swipe your finger from the top of your screen to open the quick settings menu.
- Tap on Settings
- Tap on App Manager .
- Tap on Installing Apps .
- Toggle the Allow Apps from Other Sources to be Installed switch On.