The download might be corrupted. Delete the file and re-download it using a stable Wi-Fi connection.
This usually means you have an older version of the app already on your phone. Delete the old one first, then try the installation again.
When you tap the APK file, a pop-up may appear saying, "For your security, your phone is not allowed to install unknown apps from this source." Click on that pop-up. Toggle the switch to Allow from this source . Step 3: Completing the Installation
Once you see the "App Installed" message, you can either click to close the installer or Open to jump straight into the app.
A prompt will ask, "Do you want to install this application?" Tap at the bottom right. Wait for the progress bar to finish. Step 4: Launch and Enjoy
Here is the "hot" method to navigate your file manager and wrap up that installation in seconds. Step 1: Locating the File
Navigate to the folder. This is the default home for any APK you grab from the web.
Look for the file named midiagapk.apk (or something similar). Step 2: Enabling "Unknown Sources"
If you’ve been trying to get the latest version of Midiagapk on your device, you might have hit a common roadblock: finding the downloaded file and actually getting it to run. Don't worry—it’s a quick fix.
Now that the permissions are set, hit the back button or return to your File Manager. Tap the midiagapk.apk file again.
