This wikiHow teaches you how to find out if your iPhone is infected with viruses, spyware, or other malicious apps.
Step #1. Check to see if your iPhone is jailbroken
Jailbreaking removes many of the iPhone's built-in limitations, leaving it vulnerable to unapproved app installations. If you bought someone's iPhone, they may have been jailbroken to install malicious software. Here's how to check if it's jailbroken:
- Swipe down from the center of the home screen to open the search bar.
- Type cydia in the search bar.
- Tap the Search key on the keyboard.
- If an app called 'Cydia' appears in the search results, your iPhone is jailbroken.
Step #2. Look for pop-up ads in Safari
If you are suddenly inundated with pop-up ads, you may have a virus.
Never click a link in a pop-up ad. This can lead to further viruses
Step 3. Beware of crashing apps
If the apps you regularly use suddenly crash, someone may have found an exploit in that app.
Update the apps on your iPhone regularly so that you are always using the most secure versions
Step #4. Look for unknown apps
Trojan apps are made to look legit, so this requires a bit of detective work.
- Swipe through your home screens and folders to check for apps you don't recognize or don't remember.
- If you see an app that looks familiar but you don't remember installing it, it could be malicious. It's best to remove it if you don't know what it is.
- If you want to see a list of every app you have installed in the App Store, tap the icon apps at the bottom of the store, tap your profile picture and then Purchased. If there's an app on your phone that isn't on this list (and doesn't come from Apple), it's probably malicious.
Step 5. Check for unexplained extra charges
Viruses run in the background and use your data to communicate with the Internet. Check your billing statement to make sure you haven't been affected by data usage or suddenly paying for sending text messages to premium numbers.
Step 6. Monitor the battery performance
Since viruses run in the background, they can drain your battery faster than you might expect.
- Learn how to monitor and extend your iPhone's battery life. This will teach you to find which apps are using the most battery power.
- If you see an app you don't recognize, uninstall it.
- To ensure you have the latest virus protection, make sure your iPhone is running the latest version of iOS.
- If you notice that your iPhone has a virus, it is best to restore it to the original factory settings.