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almost all of France's carrier offer ulimited SMS as default. then comes MMS then voice.

I'd venture and propose that one of the biggest reason WhatsApp (and before that BB and why the blackberry platform had an appeal to mass consumers) worked so well is for a simple reason yet none is going to easily admit willingly:

WhatsApp lets you see if the person you texted to has read your text or not in a non intrusive way.

Also not to forget, WhatsApp started when iMessage didn't exist and Facebook messenger either, it wasn't even giving a delivery confirmation. Only BBM did, only on blackberries. And here comes WhatsApp who does the exact same thing only much simpler ("are you on whatsApp? yeah! give me your phone number, i'll add you" instead of BBM pushing their PIN system...) and it comes working for almost all platforms. when it launched, it sure worked on Blackberry and iphone.




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