If you think that your Samsung Galaxy has a virus and although there are very good antivirus in Google Play, the company has the Smart Manager and a feature that lets you know and protect your device.
How to find viruses on my Galaxy?
First we must find Smart Manager and then the Security section, to do this:
You must go to your Applications and then find Smart Manager.
Now touch on the section that has to do with Security.
Then press on the section that says ANALYZE DEVICE. Wait for the application to review and scan your Samsung Galaxy for threats, malware or viruses.
Automatically the program will detect and fix it, in case you find something. With that your team will be protected and free of threats.