Once downloaded, look in your device's Downloads folder or use a file manager like Files by Google to find it. 2. Enable "Unknown Sources" Android blocks apps from outside the Play Store by default. Go to Settings > Security & Privacy . Select Install unknown apps or Special app access .
Find the app you used to get the file (e.g., Chrome, WhatsApp, or My Files) and toggle to ON. 3. Install the APK Open your File Manager and tap the inbound...apk file. Select Install when the prompt appears.
If you have a Samsung device, you may need to disable the in Settings > Security and Privacy before it allows the install.