I wanted to compare the growth of mobile across United States and India. I have witnessed the mobile revolution in India and have often heard that Asia is an emerging market for mobile but never came across any statistics showcasing the same.
United Nations provides some great datasets to play around with. I used the cellular mobile telephone subscribers dataset to create the following graph. The visualization below compares the cellular subscribers over the period 1980-2004 for US and India. As per these statistics US is way ahead in numbers but slower in growth. The orange vertical bars show the point in the timeline where US and India have comparable subscribers (~45 million). It took nearly 15 years for the US market to achieve this number whereas India achieved this in 10 years time.
Since 2004, mobile phones and service plans in India have become even more accessible and affordable. It would be even more interesting to compare the current numbers.