Android 11 blocks installation of apps built for API level 22 (Android 5.1) if they request dangerous permissions. You need to use SAI (Split APKs Installer) and disable "Verify APK" in Developer Options.
Because it is no longer on the Play Store, you must use third-party sources. Modern Android versions (11, 12, 13+) often face compatibility issues with older game files (OBB). Download the Files : You will need both the OBB data folder . Reliable repositories like still host version 3.0.4. Install the APK frontline commando d-day android 11