What to look for on your iPhone right now

Your iPhone can get infected, though it happens less often than on Android phones because Apple controls what software can run. A real virus on iPhone usually shows itself through one of these signs: your phone is suddenly much slower, apps crash repeatedly, your battery drains in hours instead of days, or you see pop-ups that won't go away even after you close them. You might also notice your data usage spiking without explanation, or your phone getting hot during normal use.

The tricky part is that some of these symptoms happen for other reasons — a full storage drive, too many background apps, or an old battery. But if several of these things are happening at once, a virus is worth investigating. Start by checking what's actually running on your phone, which you can do yourself in about five minutes.

Key Takeaways

  • Real iPhone viruses usually cause noticeable slowdowns, repeated app crashes, sudden battery drain, or unwanted pop-ups that persist after closing.
  • Check your iPhone's storage, battery health, and background app activity first, since these common issues mimic virus symptoms.
  • Review your installed apps and remove anything you don't recognize or didn't intentionally download yourself.
  • Restarting your iPhone and updating to the latest iOS version stops most malware that gets onto iPhones.
  • If problems continue after these steps, a factory reset through Settings is the most reliable way to remove a persistent infection.

Check your storage and battery health first

Before assuming you have a virus, rule out the most common causes of slowness and battery drain. Open Settings, tap General, then About to see how much storage you're using. If you're above 90 percent full, your phone will slow down noticeably. Delete old photos, videos, and apps you haven't used in months — this alone often fixes the problem.

Next, check your battery health. Go to Settings, Battery, Battery Health & Charging. If the Maximum Capacity is below 80 percent, your battery is degrading and draining faster than normal. This is a hardware issue, not a virus. If your storage is fine and your battery is above 80 percent, move on to checking what's running in the background.

Look at what's using your battery and data

Open Settings and tap Battery to see which apps have used the most power in the last 24 hours or the last 10 days. If you see an app you don't recognize, that's suspicious. Tap on it to see how much time it spent running. An app that's using 30 percent of your battery but you barely use it is a red flag.

Do the same for data usage. Go to Settings, Cellular, and scroll down to see which apps have used the most cellular data. If an app you never opened is using gigabytes of data, something is wrong. Write down the names of any suspicious apps — you'll remove them next.

Review and remove unfamiliar apps

Go to Settings, General, iPhone Storage to see every app on your phone, sorted by size. Scroll through the full list and look for anything you don't remember downloading. This includes apps with generic names like "System Update," "Security," or "Cleaner" — these are common names for malware. Tap on any suspicious app and select Remove App, then Delete App.

Pay special attention to apps that ask for unusual permissions. If a flashlight app wants access to your contacts or location, that's not normal. You can check what permissions each app has by going to Settings, Privacy, and scrolling through each category — Contacts, Photos, Location, Microphone, Camera, and so on. Remove any app that has permissions it shouldn't need.

Restart your iPhone and update iOS

Restart your phone by holding the power button and volume down button together until the power-off slider appears. Slide it to turn off your phone, wait 10 seconds, then hold the power button again until you see the Apple logo. This stops most malware from running.

After restarting, check for iOS updates. Go to Settings, General, Software Update. If an update is available, connect to Wi-Fi and install it immediately. Apple releases security patches regularly, and updating closes the holes that malware uses to get in. After the update installs, restart your phone again.

Do a factory reset if the problem persists

If your phone is still slow, crashing, or draining battery after removing suspicious apps and updating iOS, a factory reset is the most reliable way to remove a stubborn infection. This erases everything on your phone and reinstalls iOS from scratch. Before you do this, back up your data by going to Settings, [Your Name], iCloud, iCloud Backup, and tapping Back Up Now. Wait for the backup to finish — this can take several minutes on Wi-Fi.

Once your backup is complete, go to Settings, General, Transfer or Reset, Erase All Content and Settings. Your phone will restart and walk you through setup. When prompted, choose Restore from iCloud Backup to put your data back. This removes any malware while keeping your photos, contacts, and messages. The whole process takes 30 to 60 minutes depending on how much data you have.

Prevent future infections

Only download apps from the App Store — never from links in emails, texts, or websites. The App Store reviews apps before they're published, which catches most malware. Don't click links in unexpected texts or emails, even if they look like they're from Apple or your bank. Real companies don't ask you to click links to verify your account.

Turn on automatic updates so you don't miss security patches. Go to Settings, General, Software Update, Automatic Updates, and turn on both Download iOS Updates and Install iOS Updates. Keep your apps updated the same way — go to the App Store, tap your profile picture, scroll down, and turn on Automatic Updates.

Frequently Asked Questions

Can iPhones get viruses from websites?

Visiting a malicious website on Safari won't infect your iPhone the way it might a computer. However, some websites try to trick you into downloading a malicious app or clicking a link that steals your password. Never download apps from anywhere except the App Store, and be suspicious of pop-ups asking you to update software or verify your account.

What if I see a pop-up saying my iPhone has a virus?

That pop-up is almost certainly a scam. Apple doesn't send pop-ups warning you about viruses. Close Safari completely by swiping up from the bottom of the screen and dragging Safari off the top. Don't tap any buttons in the pop-up. If the pop-up keeps appearing, restart your phone and check your Safari history for the website that showed it, then delete that history entry.

Do I need antivirus software on my iPhone?

No. Apple's built-in security is strong enough that third-party antivirus apps don't add real protection. They can't scan your phone the way antivirus works on computers. Stick with keeping iOS updated, using the App Store only, and being careful about what you download and click.

Will a factory reset delete my photos and messages?

Only if you don't back up first. That's why the backup step matters — it saves everything to iCloud before you erase. When you restore from backup after the reset, your photos, messages, and contacts come back. The only thing that doesn't come back is the malware.

How do I know if my iPhone was hacked instead of infected?

A hack usually means someone got your password and accessed your account, while a virus is malicious software running on your phone. Signs of a hacked account include seeing activity you didn't do (emails sent from your account, purchases you didn't make, or password changes). If you think you're hacked, change your Apple ID password immediately and turn on two-factor authentication in Settings, [Your Name], Password & Security.