Smartphone ownership is highly correlated with national income, but there are some exceptions. Among the developing economies, Malaysia, Chile and Turkeylead the others with over 60% of adults owning smartphones. In advanced economies, Japan and France lag their counterparts. The scatter chart below, based on data from the Pew Research Center, compares percentage of adults who owned smartphones in 2015 with per capita GDP.
The scatter chart allows for a comparison of many data points along two variables. In this case, the data points are countries and the two variables are percentage smartphone ownership and per capita GDP. I grouped the countries by geography using the colors in the legend. I also added horizontal and vertical quadrant lines. This allows you to identify advanced economies that are lagging in smartphone adoption (France and Japan) and developing economies that are leading (Malaysia, Chile and Turkey) as they are in the lower-right and upper-left quadrants respectively. Here is the chart in SlideShare to download and edit using Mekko Graphics.