The line graphs illustrate the number of people subscribe to cell phone lines and landlines in four countries, Eritrea, India, the UK and Uruguay, from 2005 to 2015. Overall, we can see that in all countries, landline subscriptions had a stable trend, whereas the trend of mobile phone subscriptions was upward over the ten year period. Interestingly, people from more developed countries, namely the UK and India, had higher subscription rate to moblie and fixed telephone lines.