Functionally, iOS is a much more secure platform. Far more people are updated to the latest iOS version, which makes a huge difference. Apple invests tons of mo

Functionally, iOS is a much more secure platform. Far more people are updated to the latest iOS version, which makes a huge difference. Apple invests tons of money into secure biometrics, privacy initiatives, and lots more. At the same time, Android might still have fewer vulnerabilities in the latest versions. It's possible that Android's security technology or coding practices result in fewer security bugs. I don't think that Android has any attack surface equivalent to iMessage (which is written in Objective-C and uses some fairly low-level techniques, if I remember correctly). A lot fewer people use the latest version of Android, though, so most of that effort goes to waste.