Earlier quoted context omitted.
iOS exploits are cheaper than Android exploits because iOS exploits are so plentiful[1][2]. [1] https://www.theregister.com/2020/05/14/zerodium_ios_flaws/ [2] http://zerodium.com/program.html
This doesn't mean that iOS is any less or more secure then Android just that more people where looking at it and finding vulnerabilities.
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