In some countries (like mine), WhatsApp is not popular at all because unlimited SMS is cheaper than unlimited internet. We've had unlimited SMS for a long time now.
For all of those countries where maybe the best speed for internet is EDGE or GPRS, but where SMS are cheap, if not unlimited, this service is huge. I don't think the target is rich western world with LTE.
For all of those countries where maybe the best speed for internet is EDGE or GPRS, but where SMS are cheap, if not unlimited, this service is huge. I don't think the target is rich western world with LTE.