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Block Tracking Cookies Remove all web browser tracking cookies, clearing any trace of your browsing activity. Forgot Password? Log in. Read our full McAfee Mobile Security review. Google Play Protect comes built into every Android device that runs Google Play, and it would be great if it worked well. Unfortunately, Google Play Protect's dismal malware detection makes the strongest possible argument for using a third-party Android antivirus app.

We did like that Google Play Protect's interface is minimal, there are no ads and the system impact is light. Some of Android's other built-in features, including Find My Device and Chrome Safe Browsing, mirror what third-party antivirus apps do on the side.

Google Play Protect's best feature is that Google can use it to remotely disable dangerous apps. This stays the case whether you're running third-party antivirus software or not. We recommend you not disable Google Play Protect. But overall, Google Play Protect is awful at protecting you from malicious apps. For your own sake, please use something else. Read our full Google Play Protect review.

Ideally, to keep your Android device safe, you should keep its software updated. Each new version of Android is more secure than the one before, and each monthly Android security update fixes newly found flaws.

But unless you've got a Google Pixel or Android One phone, you won't get those updates and upgrades right away. Most device makers need time to make sure changes to Android don't break their devices or software. That lag time can be a couple of weeks, or it can be many months. Worse, some Android phone models stop getting Android OS upgrades after two years, and a few never get monthly security patches at all. That's where the best Android antivirus apps come in.

They stop attacks that try to get around Android's built-in defenses, especially those that Google has patched but which your device doesn't yet or never will have. They also stop new attacks that Google Play Protect won't catch, even on Pixel phones. Freemium apps let you choose between getting a limited set of features for free or paying to get a premium version that gives you all the possible features, similar to fully paid apps. Apps that offer a lot of features for free may also show you a lot of ads.

Such features might include anti-theft mechanisms, an "advisor" to help you examine and choose apps, a Wi-Fi network security scanners, or an app lock that requires a passcode to open specific apps. Some tack on a super-premium tier that gives you unlimited VPN service or an identity-protection-service, often at a pretty good price.

But the most important factor in deciding which Android antivirus app to use is malware protection. Norton and Bitdefender lead in this category, and Kaspersky is not far behind. Avast is good but not great, while the built-in Google Play Protect is terrible. We're not sure about Lookout and Security because they haven't submitted their apps to recent lab tests. To gauge the security protection of the best Android antivirus apps, we used the latest bimonthly test results from AV-TEST , an independent lab in Germany that measures how well major Android security apps detect zero-day malware and other threats.

Because some apps' scores are inconsistent from one test to the next, we also looked back at the previous two years of results. We also used some results from AV-Comparatives , a lab in Austria that once a year tests nearly all the Android antivirus apps in Google Play, even those that don't cooperate with testing labs.

But these tests are less detailed. To measure the impact antivirus apps have on overall performance, we used the Geekbench 4 benchmarking app on a Google Pixel 3 phone running Android 9. For each app, we ran Geekbench several times with no AV app installed, then with one of the review apps installed, and finally during that app's full scan.

We also evaluated the number and usefulness of each app's features, took note of which features were reserved for paid users, and assessed the user interface and installation process. Kaspersky antivirus products have been banned from U. Because the company is Russian, its software would create an unacceptable risk for persons and organizations involved in national security and critical infrastructure. However, we think Kaspersky software is perfectly safe for home users.

We've seen no evidence to convince us otherwise. Kaspersky researchers are well respected throughout the antivirus industry, and the company has publicly exposed Russian cyberespionage campaigns as well as American ones. Paul Wagenseil is a senior editor at Tom's Guide focused on security and privacy.

He has also been a dishwasher, fry cook, long-haul driver, code monkey and video editor. He's been rooting around in the information-security space for more than 15 years at FoxNews. If you use an Android device, you need to have one of the best Android antivirus apps installed to protect your phone or tablet from corrupted apps and other kinds of malware. Bitdefender Mobile Security. Minimum Android support: 5. App lock: Yes. Anti-theft: Yes. Reasons to avoid - Expensive unlimited VPN option.

Norton Mobile Security. Minimum Android support: 8. App lock: No. Anti-theft: No. Reasons to avoid - No more anti-theft functions - No more free tier. Avast Mobile Security. Minimum Android support: 6. Ads: Free version. App lock: Premium only. Anti-theft: Partly premium. Reasons to avoid - Unreliable anti-theft features - Too many ads in free version.

Kaspersky Mobile Antivirus. Reasons to avoid - Limited features overall - Free version won't auto-scan new apps. Reasons to avoid - Few free features - Not much malware-protection data - Heavy, slow scans. McAfee Mobile Security. Minimum Android support: 7. App lock: Discontinued. Anti-theft: Discontinued.