You can find and download Android apps and games from various third-party websites and mobile market apps. Most websites and mobile market apps include an installation button that appears after you download an Android app file. You can also install an app file by opening it in the File Manager app on your BlackBerry device.
If you can't find an app file that you downloaded, you can search for the app name in the File Manager app. Most Android apps include the file name extension .apk. To search for all the Android app files that you downloaded, try searching the File Manager app for .apk.
Apps that you install from sources other than BlackBerry World have not been reviewed by BlackBerry. These apps might pose a risk to your device and personal data. You should only install apps from trusted sources.
While most apps designed for Android smartphones can be installed and opened on BlackBerry devices, some apps might make use of services that are not supported by BlackBerry 10 OS. BlackBerry 10 OS might also replace these services with alternate services (such as mapping services).
If you don't want to accept these potential risks and limitations, you should not install apps from sources other than BlackBerry World.