Studies have shown that individual iPads and iPhones are used for web browsing much more than Android devices, just as their users spend more on apps. So Web B

Studies have shown that individual iPads and iPhones are used for web browsing much more than Android devices, just as their users spend more on apps. So Web Browsing is a very imperfect measure of installed base. Worldwide estimates are that that less than 20% of mobile devices sold are iOS, roughly 15% iirc. It’s almost certain US sales percentages for iOS are much higher, but no where near 60%.