But it's still interesting how they initially were late on mobile, with all the FBML embedded things (Zynga games) not working on mobile and things moving from their "platform" to mobile apps, but I assume for now with WhatsApp, Insta and messenger they "own" a notable amount of mobile screen time. Missing the underlying platform of course gives them "neutrality" that they can be on all OSes (till the privacy enforcements make it harder for them) instead of having to differentiate the Facebook phone from iPhone.
A Facebook phone probably would give even more critical reception ...