How one can set up APK on Android (non-Google Play apps)

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On this video you may be taught how you can set up APK information (Android app file) onto an Android system, assuming you did not obtain the app from Google Play.

APK Supervisor (app): https://play.google.com/retailer/apps/particulars?id=com.magmamobile.app.apkinstaller&hl=en

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