This is a recent one. Whatsapp bug [1] exposed both Android and iOS few years back. And then there was MMS exploit [2] that affected close to 95% of android phones

[1] https://www.ft.com/content/4da1117e-756c-11e9-be7d-6d846537a...

[2] https://en.wikipedia.org/wiki/Stagefright_(bug)