One reason for the rapid growth is the ability to display the Khmer script: over 90% of smartphones have Khmer compared to 66% of regular cellphones. The cheapest price for a smartphone from one of the Cambodian mobile operators is US$40, equivalent to 4% of per capita income. This does not seem to be particularly burdensome given that Cambodia has the cheapest mobile broadband price among the LDCs at just US$1 per month. What seems to be more of a problem is finding a place to charge the smartphone.