(NEWSER) - Until recently, the iPhone ruled the smartphone roost, but a new crop of competitors could threaten Apple’s bottom line, Jon Fortt writes for Fortune. AT&T, the sole iPhone carrier, pays Apple $300 for every new customer. Until now, paying for the privilege made sense, because AT&T monopolized the “high-value data junkies.” But “these new iPhone rivals,” Fortt writes, “are bound to alter the math of the phone wars.” More»