No, iPhones do not need antivirus software. This is because the iOS operating system, which is used on iPhones, is designed to be secure against viruses and other malware. Additionally, the App Store only allows for the distribution of certified software, which helps to prevent the spread of malware.

While it is still possible for an iPhone to become infected with malware, this is very rare. In most cases, the built-in security features of the iOS operating system are enough to protect your iPhone from viruses and other malware.

However, it is still important to be cautious when downloading and installing apps and extensions on your iPhone. Avoid downloading apps and extensions from unknown or untrustworthy sources, and only download apps and extensions from the App Store to ensure that they are safe and secure.

In conclusion, while iPhones do not need antivirus software, it is still important to be cautious when downloading and installing apps and extensions to protect your device from any potential security threats.