Red Apk - Download Cobra
Go to your Android phone's Settings > Security (or Privacy) and enable "Install unknown apps" or "Unknown sources" to allow installation of apps from outside the Google Play Store.
Follow the on-screen instructions. If a pop-up asks you to grant permission, allow it to complete the installation. Download COBRA RED apk
Open your Downloads folder or notification bar once the download finishes, and tap on the APK file to start the installation. Go to your Android phone's Settings > Security