I use anti malware software. Have never had an issue. I like iPhones, just don’t want to spend the money on one.
And I don't want the expense and threat of malware.
Nor do I want my personal life sold, as happens with Google's products.
I consider the iPhone a bargain.
To each their own.
Anti-malware works only after the malware is discovered and identified. The latest Android malware affected 250 million Android devices apps. The highest count on iOS was a little under 4000 and those were in China in third party non-Apple side-load app stores of the kind this law suit wants to make legal in the US, breaking Apples security model for iOS which has kept malware out of iPhones and iPads.