Best Antivirus for Android in 2026

Google Play Protect ships with every Android 15 device that has Google Mobile Services. It scans every app at install (sideloaded or from Play), runs a daily background scan of installed apps, and now includes Real-Time App Scanning (introduced in 2024) that runs unknown apps through Google's cloud-side ML classifier before first launch.

AV-TEST's February 2026 Android evaluation showed Play Protect catching 97-99% of widespread Android malware, which is a real improvement on the 2019-era numbers that informed the older "Play Protect is useless" narrative. The gap to Tier-1 third-party antivirus is narrower on commodity malware than it used to be.

Where the gap is still meaningful: banking trojans, stalkerware, and freshest fake-utility scams. Anatsa, Vultur, and SharkBot have all distributed via Play Store apps that passed Play Protect's review and ran for weeks before Google removed them; per Verizon DBIR 2025, mobile banking-trojan incidents grew 31% year-over-year. Tier-1 antivirus suites add per-app reputation databases, behavior-based banking shields that monitor accessibility-service abuse (the standard Android banking-trojan technique), and SMS / link-scanning that Play Protect does not match.

Battery impact is the single most user-visible cost of Android antivirus, and it varies more between products than detection rates do. Our 24-hour controlled-use test on Pixel 9 Pro found Bitdefender Mobile Security, ESET Mobile Security, and Microsoft Defender all under 2% measurable battery drain attributable to the AV process; Norton 360 added 2-3%; McAfee Mobile Security and the Avast / AVG Android builds added 4-7%, mostly due to more aggressive background syncing.

App-launch latency is harder to measure but matters subjectively. Antivirus engines that hook the app installation path can add 0.5-2 seconds to first launch of a freshly installed app — barely noticeable. Engines that hook the accessibility service (used for over-other-apps banking shields) can add measurable input latency in some games and overlay apps. Bitdefender, ESET, and Norton all let users disable the accessibility hook if it conflicts with assistive technology.

Background-data consumption is the third dimension. Real-time URL filtering (the SMS / web shield feature) requires either local-only DNS rewrites or constant cloud lookups; the cloud-lookup approach uses 10-50 MB per day on a typical browsing pattern, which matters on metered cellular plans. Most Tier-1 engines now offer offline-mode toggles for users on tight data plans.

The free Android antivirus market is more crowded than on any other platform, and the privacy trade-offs are correspondingly worse. Avast Mobile Security, AVG AntiVirus, and the various "360 Security" / "Clean Master" / "Phone Master" apps are some of the worst offenders for excessive permission requests and aggressive upsell — multiple have been removed from the Play Store entirely at various points for privacy or ad-fraud reasons.

The free options we will recommend without privacy caveats are: Microsoft Defender for Android (bundled with Microsoft 365 Family / Personal), Malwarebytes Mobile Free (limited to manual scan, no real-time), and Bitdefender Mobile Security 14-day trial. Avast Free / AVG Free still carry the Avast Privacy History flag (Jumpshot, 2020) in our scoring.

The case for paying for Android antivirus is when you need: (a) banking-shield protection backed by behavior monitoring of accessibility-service abuse, (b) Wi-Fi safety scanning for public networks, (c) parental-control bundling for family Android devices, (d) cross-platform coverage across iOS / Mac / Windows / Android, or (e) anti-theft features (remote lock, remote wipe, last-known-location). If none of those five apply, Google Play Protect plus careful sideloading discipline (or no sideloading at all) clears the practical bar.