The smartphone becoming Asia's primary device, charted. 

This chart from a TNS survey of Internet users around the world shows how two clusters of countries in Asia respond to the smartphone.

The ones that had a high PC penetration buy their smartphones and then in 2013 start giving up on PCs.

The ones that had low PC penetration, watch the PC penetration fall as more and more Internet users come online thanks to smartphones alone. 

This is from TNS consumer survey data, so there are a lot of kinks -- the weird behavior of India and Japan, for example -- but the overall direction is striking: rich countries slowly wean themselves off PCs, while poorer countries don't even bother to buy them. 
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