Sprint had mixed results today for the summer that gave it a heavy cost for the popularity of Android. It had its second straight quarter of adding users after years of losses, adding a total of 644,000 users, more than half of which (354,000) were subscribers moving to devices like the HTC Evo 4G and Samsung Epic 4G. The costs of handling upgrades, however, led it to roughly double its losses from a year ago to a net $911 million.
