how long do people keep smartphone
Entner: Average Time People Keep Cellphones Rises to 26 Months. Approximately 90 percent of the 143 million mobile phones sold in the U.S. in 2014 were smartphones, according to wireless analyst firm Recon Analytics.
New research conducted by British psychologists shows that young adults use their smartphones roughly twice as much as they estimate that they do. In fact, the small preliminary study found that these young adults used their phones an average of five hours a day -- that's roughly one-third of their total waking hours.