You’ve heard the myth — that it's impossible to get a virus on an iPhone because the phone’s main browser, Safari, has no risk of giving your phone a virus; however, the truth is, no matter which browser you use, there's always a chance it could happen. While iOS devices are more secure, viruses come from the websites you visit on Safari, not the browser itself.

There are a few telltale signs to determine whether your iPhone has a virus — for instance, excessive data is being used, or finding apps on your iPhone you never downloaded. And if you notice your iPhone is slow, using more battery power than usual, or apps aren't working correctly, this could be another indicator that your iPhone has been compromised.

If you notice any of these issues, restoring your iPhone back to factory settings can remove the virus; afterwards, you can then restore your iPhone from a backup. If you're still having issues, contact Apple or take your iPhone to an Apple store. While viruses are less likely to happen on iOS, if you have a jailbroken iPhone or accept downloads from unsecure websites, there's more risk.