Okay, what if FB makes WhatsApp slow, buggy and lacking features instead? Are the Android users be willing to switch to other messenger platform for the comfort of the iPhone users or are the iPhone users consider the messaging quality just as if the consider camera quality when purchasing a new phone?

I agree that the messaging platforms are not all powerful but they do wield significant power. iPhone is famously good for social media because Instagram and Snapchat camera integration sucked and that was something people consider when buying a new phone.

So there must be a point where switching to a different phone to improve communications is less painful than making all your social circle switch platform for you.