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Three shields, one purpose: protect your phone from invisible attacks.
Swipe to find out which of these free antivirus programs offers the best defense without sacrificing performance.
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Avast Mobile Security
Avast Mobile Security combines malware detection, antiphishing, and a junk file cleaner in a single app. Real-time scanning analyzes each APK when installed, and the function Wi-Fi Security Check the security of the networks you connect to. Includes a Free VPN (limited to 100 MB/day), call blocking and App Lock to protect sensitive apps with a PIN or fingerprint. It also offers an anti-theft module with remote location and data erasure.
Pros
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- Wide variety of tools (VPN, anti-theft, cleaning).
- Threat database updated daily.
- Accessible interface and clear notifications.
Cons
- Advertising in the free version.
- Some features (unlimited VPN, firewall) are reserved for the premium version.
- It may consume a little more battery in the background.
Bitdefender Antivirus Free
Bitdefender Antivirus Free stands out for its lightness and its optimization engine. on-access detection, which scans apps and files for malware without any configuration. Its Autopilot makes security decisions automatically, and the antiphishing It blocks fraudulent websites while browsing. It displays no ads and barely requests any permissions, making it one of the most discreet.
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Pros
- Very low resource and battery consumption.
- No ads or constant upgrade offers.
- Almost no setup required: “set it and forget it.”
Cons
- Lacks advanced features (no VPN, no anti-theft).
- Does not offer junk cleaner or firewall.
- Does not allow scheduled scanning; only manual.
Norton Mobile Security
Norton Mobile Security offers real-time web protection, malicious app blocking, and security assessment. apps advisor, which analyzes permission usage before installing. Its Wi-Fi Security Detects unsecured networks and alerts you if your access point is exposed. Includes anti-theft, call blocker, and a security center to manage vulnerabilities.
Pros
- Strong reputation and leading detection quality in independent tests.
- Professional interface, no disruptive ads.
- Detailed security reports and privacy recommendations.
Cons
- Only 30 days free trial; then requires a subscription (approx. €5/month).
- May be heavier on RAM and CPU than lightweight alternatives.
- Some basic features (auto-scan and VPN) are limited to paying users.
You can download the apps from their stores
| Key resource | Avast Mobile Security | Bitdefender Free | Norton Mobile Security |
|---|---|---|---|
| Real-time detection | Yeah | Yeah | Yeah |
| Web antiphishing | Yeah | Yeah | Yeah |
| Integrated VPN | 100 MB/day | No | No (just test) |
| Scheduled Scan | Yeah | No | Yeah |
| Junk cleaning | Yeah | No | No |
| Battery consumption | Moderate | Low | High |
| Cost (freemium/pro) | Free/€4 per month | Free | Trial/€5 per month |
In the Part 3 You'll learn how to install and configure your chosen antivirus, optimize scans and notifications, and adopt ongoing security practices to keep your phone protected.