Avast the name is enough I say.I was using avats for very long time and I must say this application has everything that should be vontain by a antivirus application.It comes with 2 of its best versions pro and the normal one.The normal one contain all the important precoation that should be present in the any of best antivirus system for smartphones.Avast mobile security is actually a perfect package of your android securing applivation.The best part of its is themalaware detection feature and the junk file cleaning and mostly the anti theft system.So thumbs up for Avast Mobile Security.