Those ads go away if you pay for either of Avast Mobile Security's paid tiers, Premium ($2 monthly or $20 yearly) or Ultimate ($7 monthly or $40 yearly). (It's since been removed.) And the free version's ads and constant nags to upgrade are annoying and intrusive. Some of Avast's anti-theft functions didn't work for us, and its call-blocking feature didn't work at all. While Avast's malware protection is good, it's far from perfect. Īvast Mobile Security & Antivirus is one of the most full-featured of the best Android antivirus apps, offering everything from a privacy adviser to a system optimizer to a customizable blacklist. Read our full Norton Mobile Security review. It also checks apps in the Google Play store for security and privacy risks even before you install them. Norton's killer feature is the unique App Advisor, which checks apps on your device for heavy data usage and unusual behavior. The most expensive plan, Norton 360 Deluxe, $105 per year, is actually part of Norton's antivirus lineup and lets you protect up to five Android, Windows, Mac or iOS devices.Īll of these subscriptions can be paid for right through the Norton app, which has a 14-day free trial period.

That's been replaced with a security-only app for one device that costs $15 a year.įor $50 a year, a medium-priced tier called Norton 360 for Mobile adds unlimited VPN service and 'dark web' monitoring of your personal information.

Norton also killed Norton Mobile Security's free tier, which was the best among all the Android antivirus apps we'd recently tested. Unfortunately, it no longer has anti-theft functions, nor its contacts backups and Link Guard malicious-link blocker. Norton Mobile Security, aka Norton 360, offers the best malware protection of any of the Android antivirus apps we tested.

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