Midiag.apk Installation. Then Try Again: Open File Manager And Complete

: Tap on midiag.apk (or a similar name like DeviceDiagnostics.apk ) to begin the installation.

Tap the file. If your phone asks for permission to "Install from unknown sources," toggle that setting to Finish Setup: and wait for the "App Installed" message. Try Again: : Tap on midiag

: Open your device's File Manager (often labeled "Files" or "My Files") and navigate to the Downloads folder or the root directory of your internal storage. : Tap on midiag