Jealousy? I think you may need to expand your vocabulary a bit!
I have an opinion on something, I assume thats ok? You seem to be here trying to prove me wrong, and also commenting on my tone of reply.
Im not trying to tell you that you are wrong, only stating what I think. If you dont like my opinion, feel free to ignore it. You are not forced to comment.
Those are the only two countries that could plausibly have billions of mobile devices and they appear to have reached 50%.
India: https://stats.labs.apnic.net/ipv6/CN?c=IN&x=1&v=1&p=1&r=1&w=...
China: https://stats.labs.apnic.net/ipv6/CN?c=CN&x=1&v=1&p=1&r=1&w=...