The world's love affair with smartphones continues to blaze. Between April and June, worldwide smartphone shipments grew by 52.3 percent compared to the same period in 2012, according to a new report by market research firm IDC. That's the highest year-over-year growth rate for smartphones in 15 months, and IDC says it's only to going to get bigger from here.Related StoriesNewest iPhone 6 concept: 3-in-1 device morphs from smartphone to phablet, to iPadT-Mobile drops upfront costs for iPhone, Galaxy, and other top-shelf phones
