Startup Better Finance is offering lease-to-own programs for high-end smartphones. But some customers say that retail stores, such as MetroPCS, aren't always clear about the lease terms up front. Larry W. Smith/EPA/Landov hide caption

itoggle caption Larry W. Smith/EPA/Landov

The Samsung Galaxy Mega (from left), Samsung Galaxy S4 and Apple iPhone 5 are shown. Apple is expected to announce larger models of its smartphone on Tuesday. Richard Drew/AP hide caption

itoggle caption Richard Drew/AP

Twenty-nine percent of all cellphone owners described their phone as "something they can't imagine living without," according to a Pew Research Center survey. iStockphoto hide caption

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He's not checking your blood glucose levels. He's playing Words with Friends. Anna Zielinska/iStockphoto.com hide caption

itoggle caption Anna Zielinska/iStockphoto.com

Nokia was the only large phone manufacturer in the world to commit to selling phones running Microsoft's operating system. Now Microsoft is buying Nokia's mobile phone business. Timothy Clary/AFP/Getty Images hide caption

itoggle caption Timothy Clary/AFP/Getty Images