Best Free Antivirus for Android and iPhone

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Your phone is more vulnerable than ever. WhatsApp scams, malicious links and even fake apps can steal your data in seconds. But the good news is that there are Effective free antivirus to protect your Android or iPhone, even without spending anything. In this guide, you will learn about the best apps on the market, with powerful features, updated for 2025.

Advantages of Using an Antivirus on Your Cell Phone

Real-time protection against threats

Antivirus monitors apps and websites in real time, blocking viruses, trojans and malicious links.

Security for shopping and banking

Helps protect your data in banking apps, PIX, e-commerce and sensitive transactions.

Detection of fake or spy apps

Identifies malicious apps that access your camera, microphone, or steal your information.

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Lightness and battery saving

The apps mentioned here were chosen for their great performance and low consumption.

Best Free Antivirus for Android and iPhone

1. Avast Antivirus

Availability: Android, iOS

It offers real-time protection, blocking dangerous links and Wi-Fi scanning. It also has anti-theft function and photo vault.

2. Bitdefender Mobile Security

Availability: Android, iOS

Lightweight and efficient, it offers on-demand scanning, web protection, app blocking and data breach alerts.

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3. AVG Antivirus

Availability: Android, iOS

User-friendly interface, extra features like junk cleaning, app blocking and lost phone tracking.

4. Avira Mobile Security

Availability: Android, iOS

It stands out for its free integrated VPN, privacy scanner and protection against phishing and spy apps.

5. Kaspersky Mobile Security

Availability: Android, iOS

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Solid protection against malware, dangerous links and suspicious apps. The free version already offers great performance.

6. Norton Mobile Security (Free Version)

Availability: Android, iOS

Focus on online security: alerts about unsafe Wi-Fi networks, risky apps and vulnerability updates.

7. Malwarebytes

Availability: Android, iOS

Excellent for detecting malware, adware and apps that display strange behavior. Very lightweight and effective.

Interesting Extra Features

  • Integrated VPN: Some antiviruses like Avira offer free VPN for anonymous and secure browsing.
  • Anti-theft: Functions such as remote location, audible alarm and device lock help in case of loss or theft.
  • Photo Vault: Protect personal photos and files with a password or biometrics in apps like Avast or AVG.
  • Privacy Check: See which apps access your camera, microphone, or location.
  • Data Breach Monitoring: Alert if your email or password is leaked on the internet (Bitdefender and Norton).

Common Care or Mistakes

  • Install multiple antiviruses at the same time: It can cause slowness and conflicts between apps. Use only one.
  • Bypass app permissions: Always review what each application accesses on your phone.
  • Uninstall antivirus by mistake: Many users remove it thinking that the app does nothing, but the protection is in the background.
  • Not keeping the app updated: Virus definitions change all the time, so updates are essential.

Interesting Alternatives

  • Google Play Protect: Built into Android, it automatically scans apps but has limited protection.
  • Apple Integrated Security: iOS has advanced protections against malicious apps, but it doesn't detect data leaks.
  • Paid apps: If you need advanced protection, it's worth investing in premium versions with more features.
  • Manual reviews: Manually checking apps, permissions and phone behavior is still essential.

Frequently Asked Questions (FAQ)

Is antivirus really necessary on a cell phone?

Yes, especially on Android phones. They help block malicious apps, fake links and protect your personal data.

Does antivirus slow down your phone?

The apps listed here are lightweight and optimized. Installing more than one antivirus can indeed slow down your system.

Which free antivirus is the best?

It depends on your usage. For those who want simple protection, AVG is great. For extra features, Bitdefender and Avira stand out.

Can I use antivirus and VPN at the same time?

Yes. In fact, apps like Avira already offer a free integrated VPN.

Does antivirus replace Play Protect or iOS Security?

No. Antivirus is an add-on, offering extra features that native protections do not have.

Conclusion

Protecting your phone in 2025 is essential — and you can do it for free. Test the apps mentioned, choose the one that best suits your routine and avoid headaches with viruses, scams and invasions. Save this article, share it with your friends and keep your digital security up to date!

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Author's Photo

Lucas Martins

Lucas Martins is 25 years old, has a degree in Digital Communication and shares his passion for technology, apps and the online world on his blog.