[vsskanth]

I couldn't really figure out why US cellular users stayed on SMS and MMS while the rest of the world moved to WhatsApp or Telegram.

[neodymiumphish]

As a US cellular user, me neither. The only reason I can think of is that iPhone users are such a large portion of all US users, and this would effectively require convincing them to use something other than iMessages just to include Android users.