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The usage of wireless network has been increasing exponentially throughout the world. |
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In 2011, According to the International Telecommunication Union (ITU), 5.9 billion inhabitants use mobile phones (80% of the world population). |
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This is more than the 1.185 billion users of fixed lines worldwide. |
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There has been a sharp increase in mobile phones use, especially in developing countries. |
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The number of mobile users tripled since 2000. |
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In financial terms, the global mobile business reached $414 billion in revenue in 2003, a ten times increase since 1993. |