For New Android Versions (Oreo, Pie, Android 10, 11 and 12)
1
Go to your Android Settings > Apps & Notifications.
2
Select Advanced or the three dots at the top-right corner users might see either option depending on their device.
3
Select Special App Access.
4
Choose Install Unknown Apps.
The easiest way to install an APK file on your Android is to download the file using the default browser, Chrome. Find a website offering the Android app and tap the link to download the APK file. Accept any pop-ups, including This type of file can harm your device. Only download APK files from reputable sources.