I have been using WhatsApp since 2010 and yes it's the highest popular messaging app in the World. Jan and Brian did a tremendous work to think about it and making it a reallity. Now people rarely use SMS and switched to WhatsApp. Story of Jan is full of motivation and it teaches us not to give up in any situation instead keep thinking creative and unique.
Now the current situation is that all smartphone users use WhatsApp and even businesses have also moved to this platform. Undoubtedly this is great communication app with low cost which is only for internet use and not costly or limited like traditional SMS. Thanks much for such a great and motivational post @chbartist

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