iPhones get viruses far less often than Android phones or computers, but they are not immune
An iPhone can catch malware, but Apple's closed system makes it harder than on other devices. The App Store review process screens for obvious threats, and iOS isolates apps so one cannot easily infect another. That said, malware does slip through — usually disguised as a legitimate app, or installed after you click a malicious link in Safari or an email.
The signs of iPhone malware are often subtle. Your phone might drain battery faster than usual, run hot, or slow down noticeably. You might see unfamiliar apps you did not install, or your data bill might spike because malware is sending information in the background. Some malware straightforward steals passwords or financial data without any visible symptom at all.
The most common entry point is a phishing link — a text message or email that looks like it came from your bank, Apple, or another trusted source, but actually leads to a fake login page designed to steal your password. Once someone has your Apple ID password, they can install apps remotely, change your settings, or lock you out of your own device.
Key Takeaways
- Battery drain, overheating, unexpected slowness, and unfamiliar apps are the most common signs of iPhone malware.
- Check your App Library for apps you do not remember installing, and review your Apple ID login history in Settings to spot unauthorized access.
- Phishing links in texts and emails are the most common way malware reaches iPhones, so never enter your Apple ID password after clicking a link.
- Restarting your iPhone clears temporary malware from memory, and updating iOS closes security holes that malware exploits.
- If you suspect a compromised Apple ID, change your password when ready and turn on two-factor authentication in Settings.
Check your App Library for unfamiliar apps
Open the App Library by swiping to the rightmost home screen or swiping up from the bottom and tapping the App Library icon. Scroll through each category — Games, Productivity, Utilities, and so on — and look for apps you do not remember downloading. Malware often disguises itself as a system tool, a game, or a utility with a generic name like "System Cleaner" or "Battery Saver".
If you find an app you did not install, tap and hold it, then select "Remove App" and confirm. Do not open it first — just delete it. If you are unsure whether an app is legitimate, search the app name online along with the word "malware" to see if other users have reported it as suspicious.
Also check your home screen itself. Swipe through each page and look for anything unfamiliar. Some malware hides by changing the app icon to look like a system app, so pay attention to anything that looks out of place.
Review your Apple ID login history and active sessions
Open Settings, tap your name at the top, then tap "Password & Security". Scroll down and tap "Review your account activity" or "Devices" (the exact wording varies by iOS version). This shows every device that has logged into your Apple ID and when.
Look for devices you do not recognize or login dates that do not match when you actually used your phone. If you see a suspicious device, tap it and select "Remove from Account" when ready. This logs that device out of your Apple ID and prevents whoever has access from installing apps or changing your settings remotely.
While you are in Password & Security, check that two-factor authentication is turned on. This adds a second layer of protection: even if someone steals your password, they cannot log in without a code sent to your trusted phone. If two-factor authentication is off, turn it on now.
Check your cellular and Wi-Fi data usage
Open Settings and tap "Cellular" (or "Mobile Data" depending on your region). Scroll down to see which apps have used the most data in the current period. Malware often sends stolen information in the background, so an app using far more data than you would expect is a red flag.
Look especially for apps that use significant data but you rarely or never open — a game you installed once and forgot about, or a utility you do not use daily. Tap the app name to see a breakdown of when it used data. If the usage spikes at times you were not using your phone, that is suspicious.
Also check Wi-Fi usage the same way: go to Settings, tap "Wi-Fi", scroll down, and tap "Wi-Fi Data". The same principle applies — look for apps using more data than makes sense for what they do.
Restart your iPhone and update iOS
Restart your phone by holding the power button and either volume button until "Slide to Power Off" appears, then drag to shut down. Wait ten seconds, then hold the power button again until the Apple logo appears. This clears temporary malware from your phone's memory and often stops suspicious behavior when ready.
After restarting, update iOS right away. Open Settings, tap "General", then "Software Update". If an update is available, tap "read and Install". iOS updates patch security holes that malware exploits — staying current is one of the strongest protections against infection.
If your phone is very slow or unresponsive, you may need to force restart instead. Hold the power button and volume-down button together for ten seconds until the power-off slider appears, then release. This is more forceful than a normal restart and can clear stubborn malware.
Change your Apple ID password and check your payment methods
If you suspect your Apple ID has been compromised, change your password when ready. Go to Settings, tap your name, then "Password & Security", then "Change Password". Use a strong password you have never used before — at least 16 characters mixing uppercase, lowercase, numbers, and symbols.
After changing your password, check your payment methods. Tap your name in Settings, then "Payment & Shipping". Look at each credit card or payment method on file. If you see one you did not add, remove it when ready by tapping "Edit" and then the minus sign next to the card.
Also check your Apple ID email address. Tap your name in Settings, then "Name, Phone Numbers, Email". Make sure the email address listed is one you recognize and control. If someone has added a recovery email address you do not recognize, remove it by tapping "Edit".
When to restore your iPhone from backup
If you have deleted suspicious apps, updated iOS, and changed your Apple ID password but your phone still behaves strangely — battery drains rapidly, apps crash, or you see unfamiliar activity — you may need to restore your iPhone. This erases everything and reinstalls iOS fresh.
Before you restore, back up your data. Open Settings, tap your name, then "iCloud", then "iCloud Backup". Tap "Back Up Now" and wait for the backup to complete. This saves your photos, messages, and settings so you can restore them after the wipe.
To restore, connect your iPhone to a computer with iTunes or Finder, or use iCloud.com from another device. Choose "Restore" and follow the prompts. Your phone will restart, and you can then restore from the backup you just created. This removes any malware that was hiding in your system files.
Frequently Asked Questions
Can I get a virus just from visiting a website in Safari?
Visiting a website alone rarely installs malware on an iPhone. However, clicking a link in an email or text that takes you to a fake login page can trick you into entering your Apple ID password. Never enter your password after clicking a link — instead, go directly to Settings or Apple.com to log in.
Do I need antivirus software on my iPhone?
No. Apple's App Store review process and iOS security make traditional antivirus apps unnecessary. Any app claiming to "scan for viruses" or "clean your iPhone" is either useless or itself suspicious. Focus instead on keeping iOS updated and being careful what you tap.
What does it mean if my iPhone is running hot?
Overheating can mean malware is running in the background, but it also happens when you are using demanding apps, charging while using your phone, or if your battery is failing. Restart your phone and check which apps are using the most CPU in Settings > General > iPhone Storage. If an unfamiliar app is listed, delete it.
If I restore my iPhone, will I lose my photos and messages?
Not if you back up first. Before restoring, create an iCloud backup by going to Settings > [Your Name] > iCloud > iCloud Backup > Back Up Now. After you restore and set up your phone again, you can restore from that backup and get all your data back.
Can malware survive a restart?
Most temporary malware clears from memory when you restart. However, malware installed as an app will return after restart unless you delete the app itself. That is why checking your App Library and deleting unfamiliar apps is the first step.