If you think your Android phone or iPhone may have malware, the safest approach is to slow down, protect your accounts, remove suspicious apps or profiles, update the device, and use the built-in security tools before considering a factory reset.
Do not install random “virus cleaner” apps from ads or unfamiliar websites. Some security problems are caused by phishing or a stolen password rather than malware on the phone itself.
Quick answer
Disconnect from suspicious networks if needed, update the phone, remove apps or profiles you do not trust, review account sign-ins, change important passwords from a trusted device, enable two-factor authentication, and run the built-in security checks available on your platform.
Signs that deserve attention
- Apps you do not remember installing
- Pop-up ads appearing outside the browser
- Sudden, unexplained battery or mobile-data use
- Settings changing without your permission
- Repeated account-login alerts you do not recognize
- Browser redirects or fake security warnings
None of these signs proves malware by itself. A faulty app, weak signal, low storage, or an account compromise can look similar.
1. Protect your accounts first
If you see suspicious login alerts, unauthorized messages, or unfamiliar purchases, treat the account as compromised even if the phone itself seems normal.
- Use a trusted device to change the password for your email account first.
- Then change passwords for banking, social media and other important services.
- Enable two-factor authentication where available.
- Review recent sign-ins and sign out of devices you do not recognize.
Do not reuse the same password across multiple services.
2. Update the phone and apps
Install available system and app updates from official sources. Security updates fix known vulnerabilities and app updates can remove bugs that look like suspicious behavior.
On iPhone, check Settings > General > Software Update. On Android, the exact menu varies by brand, but look for Software update, System update, or a similar option in Settings.
3. Remove apps you do not trust
Review recently installed apps and uninstall anything you do not recognize or no longer need. Be especially cautious with unofficial cleaners, free VPN apps from unknown publishers, sideloaded APKs, modified apps, launchers, keyboards and file managers.
On Android, also review which apps are allowed to install other apps, use accessibility services, display over other apps, or act as device administrators. Do not disable a setting unless you understand which app uses it.
4. Use built-in Android protection
Android users can open Google Play Store, tap the profile icon, and open Play Protect. Keep app scanning enabled and review any warnings it shows.
Samsung devices may also include additional security and device-protection features. Menu names can vary by model and software version.
5. Check iPhone profiles and unfamiliar settings
On iPhone, traditional antivirus apps cannot scan the operating system the same way desktop antivirus software can. If you suspect tampering, focus on software updates, suspicious apps, account security and unfamiliar configuration profiles.
Look under Settings > General > VPN & Device Management if that section is present. Remove only profiles you know you do not need. Work or school devices may legitimately use management profiles.
6. Review app permissions
Check access to the camera, microphone, location, contacts and photos. Remove permissions that are unnecessary for the app’s normal purpose.
On Android, use the Privacy or Permission Manager area. On iPhone, use Settings > Privacy & Security.
7. Check the browser for fake alerts and notification spam
Many “Your phone is infected” messages are simply deceptive web pages or browser notifications. Do not tap the warning or call the phone number shown in it.
Close the page, review browser notification permissions, clear suspicious website data if necessary, and reopen the browser from its normal icon.
8. Review financial activity if the situation is serious
If you notice unfamiliar purchases, transfers or subscription charges, contact the relevant bank, card provider or service directly using an official number or app. Do not use contact details from a suspicious message.
9. Back up important data
Back up photos, contacts and documents before making major changes. If you suspect a malicious app, avoid blindly restoring every app after a reset; reinstall only what you trust.
10. Factory reset only when simpler steps fail
A factory reset can help with persistent software problems, but it erases local data. Use it only after securing accounts, backing up important files and trying the safer checks above.
If the device is managed by work or school, or if you are dealing with stalking, domestic abuse, legal evidence or targeted spyware, do not reset immediately. Get qualified security or legal help first because a reset can destroy evidence.
What not to do
- Do not install random “malware remover” apps from ads.
- Do not pay a website that claims your phone is infected.
- Do not grant accessibility, VPN, device-admin or profile permissions to an app you do not trust.
- Do not factory-reset before securing important accounts and backing up data.
- Do not assume battery drain or heat alone means malware.
When to get professional help
Seek qualified help if the phone is controlled by an organization you do not recognize, accounts keep being taken over after password changes, suspicious apps cannot be removed, the device may be part of a stalking or abuse situation, or financial loss has occurred.
Frequently asked questions
Do iPhones need antivirus apps?
iPhone security works differently from desktop antivirus. For most users, keeping iOS updated, installing trusted apps, reviewing profiles and protecting accounts are more important than relying on an app that claims to scan the whole operating system.
Can Android phones get malware?
Yes. Risk is higher when installing apps from untrusted sources, granting powerful permissions to unfamiliar apps, or ignoring security updates.
Does a hot phone mean it has malware?
No. Heat can also be caused by charging, gaming, camera use, poor signal, background updates or a failing battery.
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