Speaking of android and viruses and malware, When you download an app it gives ou a list fo what the app can access it is quite easy to pick up uf it is going to be a problem app because say if tou downloaded a flash light app and it said that it access messaging, then it is obviously a bit doggie. With apple its dosnt give you a list of what the app can do an malware and viruses have been in aplications on the apple app store so both android abd apple can have viruses.
Oh and on android you can have things like nortan to scan for viruses