we all have idea about about virus and malware.those are using android or PC they are well known about this.most of the people have fear using smartphone because of malware.those use antivirus beside of malware in smartphone they should remove this because there is no use of this if you are using play store for apps.google play store have the play protect system and they have option of automatic scan.there is no way of getting harmed by malware.also they are helping to protect the phone if installing apps from other source.