I have been using avast free antivirus in my android phone near about 6 moth and I fully satiesfied avast antivirus is good software for computer this software helps for scan virus the most important feature of any antivirus software is malware detection and prevention.
Avast antivirus can check your instaled programe for mising security patches, analyse your rnuters seting toflag security pblm,
avast is very use ful n very simple to ure. It is designed such that even one who is not familliar with it can use it this is available at google play store at free of the cost.
I am fully statiesfied by avast free antivirus: -) Thank you