Free Microsoft Defender Alternatives for Android
Microsoft Defender is not available for Android but there are plenty of alternatives with similar functionality. The most popular Android alternative is 
Malwarebytes Anti-Malware, which is free. If that doesn't suit you, our users have ranked more than 100 alternatives to Microsoft Defender and 12 are available for Android so hopefully you can find a suitable replacement. Other interesting Android alternatives to Microsoft Defender are 
Avast Free Antivirus (Free Personal), 
Bitdefender Antivirus (Paid), 
AVG AntiVirus (Freemium) and 
360 Total Security (Freemium).
- Well established and trusted anti-malware solution to help protect against viruses, scams and privacy invasion.
- Avast Free Antivirus a the free for non-commercial and home usage antivirus solution from AVAST Software.
- AVG AntiVirus Free provides basic antivirus and antispyware protection for home users. Virus database updated every day. Includes innovative LinkScanner for web-protection.
- 360 Total Security offers your PC complete protection from Viruses, Trojans and other emerging threats.
- Panda Antivirus protects you while you work, play, or browse online.Antivirus Protection
- Feel the power of the first adaptive security service.
- NQ Mobile Security, formerly NetQin Mobile Anti-virus, provides you complete protection against viruses, malware and spyware.
- All-in-one mobile security & performance optimization app for Android devices, protect your phone with AirCover Security.
- Phone and tablet tracking software. Will locate your device if it gets lost. Free if you have only one device; more than one device requires a monthly paid subscription.