Being a current student in the IT field, I would say yes. Last school year a person who formally worked for the FBI as a network security head came to my school and gave a speech on mobile protection. What he said is you should definitely have an anti-virus on your android phone as mobile malware is a growing "field." He also said despite what people think, iPhones are NOT immune from malware. When my IT instructor did a mobile device unit, he said you should have several things "enabled" for the most security on your mobile device. A strong password, a backup program, an anti-theft/lost phone program, and for Android, an anti-virus. You do not have to BUY anti-virus/backup programs/anti-theft/ whatever for your phone. I use CM Security, ranked high by AV-Test.org. It is free, it not only scans for viruses, it also enables fixes for OS vulnerabilities. Cheetah Mobile, who makes CM Security has several other security apps. Including a free safe web browse, which protects you from online threats. In a nutshell the modern IT world recommends that you DO use anti-virus. But again, you do NOT have to pay for good mobile security.