How to install a mobile application using the APK-file on Android
Open the app (on Xiaomi, this is usually just called "File Manager" or "Mi File Manager"). Navigate to the Downloads folder or the APK category. Look for a file named midiag.apk or XiaomiDiag.apk . Step 2: Grant Installation Permissions How to install a mobile application using the
The error message is a specific instruction frequently encountered by Xiaomi (MIUI/HyperOS) users. It typically appears when a third-party tool—such as ChimeraTool or a Xiaomi Diag Enable Tool—attempts to activate Diagnostics (Diag) Mode on a device to repair IMEI, flash firmware, or perform advanced hardware testing . Step 2: Grant Installation Permissions The error message
If you haven't installed apps from outside the Google Play Store before, the system will block the action. The installation cannot finish until you manually trigger
The installation cannot finish until you manually trigger it within the phone's operating system.