Windows Defender is a built-in antivirus software developed by Microsoft to ensure the protection of your device. It protects your device from threats, viruses, malware, spyware, and ransomware. It is better in performance compared to other antivirus software available in the market. Since Windows Defender is only available for the Windows operating systems(OS), it cannot be installed on Android devices. You can use the antivirus software that is recommended for Android devices to protect them from unknown threats. If you have difficulties in installing an antivirus software on your Android device, contact our technical support.