Americans spent $5B upgrading iPhones in 2013 - MarketWatch

Americans spent $5B upgrading iPhones in 2013
MarketWatch
Apple. Apple iPhone 5S color range. The average iPhone upgrade costs $151 every two years, which works out to $5.4 billion in upgrades every year, according to the study by SellCell.com, a site that aggregates deals from more than 20 trade-in companies.