iPhone viruses are rare, but you can still check for signs of infection
iPhones get viruses far less often than Android phones or computers because Apple controls what software can run on the device. Every app goes through Apple's review process before it reaches the App Store, and the operating system isolates each app so malware in one cannot spread to others. That said, jailbroken iPhones (ones modified to remove Apple's restrictions) and phones that have been compromised through phishing or social engineering can still get infected.
If you think your iPhone has a virus, the most reliable check is to look for specific warning signs: apps crashing unexpectedly, the battery draining much faster than normal, the phone running hot, data usage spiking without explanation, or pop-ups appearing outside of apps. You can also check which apps have permission to access your location, contacts, photos, and microphone — malware often requests unusual permissions.
There is no built-in antivirus app on iPhone because the operating system itself prevents most malware from running. Third-party antivirus apps exist, but they cannot scan your phone the way antivirus works on a computer. Instead, they monitor network traffic and check websites you visit against known malicious lists. They offer some protection but are not necessary for most users.
Key Takeaways
- iPhones rarely get viruses because Apple reviews all App Store apps and isolates each one so malware cannot spread between them.
- Warning signs of infection include unexpected app crashes, rapid battery drain, overheating, unusual data usage, and pop-ups outside of apps.
- You can check app permissions in Settings under Privacy to see which apps have access to location, contacts, photos, and microphone.
- Restarting your iPhone or restoring it from a backup in iCloud can remove most malware without needing antivirus software.
- Jailbroken iPhones and phones accessed through phishing links are at higher risk than standard iPhones running the latest iOS version.
Check your iPhone's app permissions for suspicious requests
Malware often tries to access your location, contacts, photos, or microphone without a legitimate reason. Open Settings, then tap Privacy. You will see a list of categories: Location Services, Contacts, Photos, Microphone, Camera, Health, and others. Tap each one to see which apps have permission to use that feature.
Look for apps you do not recognize or apps that should not need that permission. For example, a flashlight app should not need access to your contacts or location. If you find an app with suspicious permissions, tap it and toggle off the permission. If the app is one you do not use, delete it entirely by pressing and holding the app icon on your home screen, then selecting Remove App and Delete App.
Some legitimate apps do request broad permissions — a maps app needs location, a photo editor needs photo access. The key is recognizing when a permission does not match what the app does. If you are unsure whether an app is legitimate, search its name online along with the word "malware" or check reviews on the App Store.
Restart your iPhone to clear temporary malware
A simple restart removes most temporary malware and clears the phone's memory. Press and hold the Side button and either Volume button until the power-off slider appears. Drag the slider to turn off the phone, wait 30 seconds, then press and hold the Side button again until the Apple logo appears.
If restarting does not stop the suspicious behavior, try a force restart. Press and quickly release the Volume Up button, press and quickly release the Volume Down button, then press and hold the Side button until the Apple logo appears (usually 10 to 15 seconds). Do not release when you see the power-off slider — keep holding until the screen goes black and the logo appears.
A restart is safe and will not delete any of your data. It simply closes all running apps and clears temporary files from memory. If the problem returns after a restart, the issue may be a malicious app rather than temporary malware.
Restore your iPhone from a backup if malware persists
If restarting does not work and you believe your phone is infected, restoring from an iCloud backup can remove the malware while keeping your photos, contacts, and messages. First, identify when the problem started. If it began recently, use a backup from before that date. Go to Settings, tap your name at the top, then iCloud, then Manage Storage, then Backups to see the dates of your available backups.
To restore, go to Settings, tap General, then Transfer or Reset, then Erase All Content and Settings. Your phone will restart and ask you to set it up again. When prompted, choose Restore from iCloud Backup and sign in with your Apple ID. Select the backup from the date before the problem started. The restore process can take 30 minutes to several hours depending on how much data you have.
If you do not have a backup from before the infection, or if the problem continues after restoring, you may need to set up the phone as new without restoring any backup. This is the most thorough way to remove malware, but you will lose any data not backed up to iCloud, such as locally stored messages or notes.
Update iOS to patch security vulnerabilities
Apple releases iOS updates regularly to fix security holes that malware could exploit. Check for updates by going to Settings, tapping General, then Software Update. If an update is available, tap Download and Install. Your phone will restart during the process, so plug it in first if the battery is low.
Keeping iOS current is one of the most effective ways to prevent malware. Older versions of iOS have known vulnerabilities that attackers can use to install malware, especially on jailbroken phones. If you have not updated in several months, check for updates now.
You can also turn on automatic updates so your phone installs new iOS versions overnight. Go to Settings, tap General, then Software Update, then Automatic Updates, and toggle on Install iOS Updates.
Avoid jailbreaking and untrusted sources
Jailbroken iPhones — phones modified to remove Apple's restrictions — are much more vulnerable to malware because they bypass the security features that normally protect the device. If your phone is jailbroken and you want to reduce malware risk, restore it to standard iOS using a computer with iTunes or Finder.
Malware also spreads through phishing links in text messages, emails, or social media. Do not click links from unknown senders, and be suspicious of messages claiming you need to update your payment information, verify your account, or claim a prize. These are common phishing tactics designed to trick you into entering your Apple ID password or credit card details.
Stick to the App Store for apps rather than downloading from third-party websites. The App Store review process is not perfect, but it catches most malware before it reaches users. Apps from outside the App Store have no review and are much more likely to be malicious.
Understand what antivirus apps can and cannot do on iPhone
Antivirus apps for iPhone cannot scan your files the way antivirus works on a Windows computer. Instead, they monitor your network traffic and check websites against lists of known malicious sites. Apps like Norton, McAfee, and Avast offer this kind of protection, but they are optional — most iPhone users do not need them.
If you want extra protection, an antivirus app can warn you before you visit a dangerous website or click a malicious link. However, they cannot remove malware that is already on your phone, and they cannot prevent you from downloading a malicious app from the App Store (though such apps are extremely rare). Their main value is as a second layer of warning, not as a primary defense.
If you decide to use an antivirus app, choose one from a well-known company and read the permissions it requests. Some antivirus apps ask for access to your browsing history or network traffic, which means they can see what websites you visit. Make sure you trust the company before granting those permissions.
Frequently Asked Questions
Can I get a virus just by visiting a website on my iPhone?
Visiting a malicious website alone will not infect your iPhone because Safari (the built-in browser) and the operating system prevent websites from installing software without your permission. However, a website can try to trick you into downloading a malicious app or entering your Apple ID password. Do not download apps from links in web pages, and never enter your password on a website unless you typed the address yourself.
What does it mean if my iPhone keeps showing pop-ups?
Pop-ups that appear inside Safari or other apps are usually ads, not malware. You can reduce them by going to Settings, tapping Safari, then toggling on Block Pop-ups. If pop-ups appear outside of apps on your home screen or lock screen, that is unusual and suggests a malicious app. Check your installed apps, delete any you do not recognize, and restart your phone.
Is it safe to use public Wi-Fi on my iPhone?
Public Wi-Fi is less secure than your home network, but your iPhone is still protected by the operating system. Avoid entering passwords or credit card numbers on public Wi-Fi, and turn off Wi-Fi when you are not using it. If you use public Wi-Fi regularly, a VPN app can encrypt your traffic, though it is not required for basic security.
Do I need to delete my Apple ID if my phone was hacked?
No. If you believe your phone was compromised, change your Apple ID password immediately by going to appleid.apple.com on a computer. Check your account for unauthorized purchases or payment methods, and enable two-factor authentication if you have not already. You can keep the same Apple ID — you just need to secure it.
What should I do if an app keeps crashing?
App crashes are usually caused by bugs, not malware. Try restarting your phone, updating the app through the App Store, or deleting and reinstalling the app. If the app continues to crash and you do not recognize it, delete it. If a well-known app crashes repeatedly, the problem is likely a software bug, not malware.