Sources: AT&T , 
quote: My take on this is that subsidies hurt more than they help
quote: The way subsidy model DOES hurt consumers is by locking people into contracts.
quote: pushing new entrants like the Lumia 900 LTE from Nokia Oyj. (HEX:NOK1V), a Windows Phone handset which launched Easter weekend, in what AT&T called its most important market launch to date.