If you know the state of mobile network services in most developing countries, you also mostly know the status of communications. The reason is the sheer dominance of mobile-delivered services.
More than 97 percent of Indian voice subscriptions are provided by mobile networks, less than three percent by fixed networks, the latest data from the Telecom Regulatory Authority of India shows.
More than 85 percent of Internet access subscribers likewise are provided by mobile networks.
The number of broadband subscribers increased from 104.96 million at the end of May 15, 2015 to 108.85 million at the end of June 15, 2015 with monthly growth rate of 3.71 percent.
The point is that a quick snapshot of mobile subscriptions and usage in most developing countries is a relatively accurate picture of the status of communications overall.