Probably not a great example, given that Broadcom bugs affect anyone using Broadcom, which, yep, includes iPhones:
> A partial list of devices which make use of this platform includes the Nexus 5, 6 and 6P, most Samsung flagship devices, and all iPhones since the iPhone 4.
And in the past they've definitely written posts on issues that only affect Android (as far as mobile goes), like their super deep dive into remote broadcom wireless exploits.
https://googleprojectzero.blogspot.com/2017/04/over-air-expl...