To remove a virus from your android smartphone is easier than you imagine; so don’t panic if you think you have a virus. How do you know if your android device has been infected with a virus? Most viruses are downloaded in apps installed from untrusted sources. Random pop-ups can be a warning sign that your smartphone is infected.Pop-up ads can also contain malware that will install on your smartphone if you click on them. Be wary of any pop-ups that ask you to ‘click here’ or try to redirect you to an app installation.