Tap Download → When prompted This type of file may harm your device, select Download
After the download completes, tap the APK file → When prompted Installation from this source is not allowed →Enable Allow from this source / Install unknown apps
Example Path
Settings → Security & Privacy → More Security Settings → Install Unknown Apps → Hotcoin → Allow
After enabling, return to the browser or file manager and tap the APK file again to complete installation.
📌 Note
This setting usually only needs to be enabled once and is not required for future updates.
Downloads → Locate the APK → Open with another app → Tap Install
If a threat warning appears, tap Install, then tap Open App after installation.
Downloads → Choose an app to open → Tap Install
If a threat warning appears, continue installation, then tap Open App after installation.


