Last week I wrote about looking carefully to find the main features before you start your description of a graph, chart or diagram. In the table below, I've highlighted my choices for the main features (in purple).
Here's my paragraph describing the information highlighted above:
It is clear that between 2006 and 2010 the main reason why people used their mobile phones was to make calls. However, during the same period there was a marked increase in the popularity of other mobile phone features, with the most dramatic increase being seen in the use of mobiles to search the Internet.