AT&T continues to back Windows Phone 7 platform whole heartedly; "We'll be the premier carrier for Windows Phone 7," a spokeswoman said via e-mail on July 26th. "We haven't given guidance on timing." The spokeswoman wouldn't elaborate about what a premier carrier would do to promote WP7 and phones running it. Analysts have noted the value to Microsoft of getting as many carriers on board as possible, especially given the failure of Microsoft Kin phones sold by Verizon Wireless and Microsoft's move away from the Windows Mobile 6.x platform.
Well-known Altimeter Group analyst Michael Gartenberg tweeted that AT&T had signed up to buy 8 million WP7 devices, citing an e-mail from a "trusted source." His comment couldn't be confirmed. By comparison, about 55 million smartphones shipped globally in Q12010.
Both Verizon and Sprint Nextel refused to comment about their plans for WP7, and the fourth-largest carrier, T-Mobile USA, didn't respond to a question on its plans.