It's not everyday you see an endeavor of this scale and potential importance to the mobile realm. GSMA has take upon itself to create and start conducting a new annual study and calculate what it is calling the new Global Mobile Engagement Index (GMEI). It is an unique figure that measures the population's level of engagement with mobile phones, taking into account both types of use cases and frequency. The gathered data covers smarthpones and more traditional handsets and spans across 56 countries (32 developing, 24 developed), at 1,000 online survey respondent (18+) per country, effectively...
Source: http://www.gsmarena.com/new_gsma_mobile_engagement_study_finds_almost_half_of_mobile_users_still_only_talk_and_text-news-23505.php