Expected length of mobile phone ownership until replacement, U.S. and global 2012

* The global online survey was conducted with 4,700 respondents in 7 countries. Part of the sample in each country included 'elites'. Sample sizes were as follows; The United States (n=1,000, elites: n=100), Brazil (n=500, elites: n=100), China (n=500, elites: n=100), India (n=500, elites: n=100), Indonesia (n=500, elites: n=100), Korea (n=500, elites: n=100), and the United Kingdom (n=500, elites: n=100). An identical survey was administered by telephone in South Africa with 300 respondents, 50 of which were classed as elites.

** Classification of elites: high income/wealth, highly educated, regularly follow current events.