Since 1997, the wireless industry has exploded with exponential growth. Every measurable area: minutes used, 911 emergency calls, text messaging, and data consumed has exploded. Among the many staggering statistics is the rapid growth of a new category, wireless-only households, where there is only a cell phone and no traditional land line.
The statistics on this page are based upon the data reported by the CTIA at: http://ctia.org/media/industry_info/index.cfm/AID/10323
The following graphic on wireless subscribers indicates the number of active devices, including smartphones, feature phones, tablets, hotspots, etc.