(ru) Андрей Крупин, « Windows Phone 7: в поисках индивидуальности », 3DNews Daily Digital Digest, (consulté le ) : « ... в Windows Phone 7 отсутствует поддержка USSD-запросов ... »
(en) Exclusive interview with Joe Belfiore, corporate VP of Windows Phone () Engadget. La scène se produit à 06:30. “Actually, as a general matter, there are a whole lot of companies that we're working with pretty closely to figure out what additional capabilities developers want and need to add great new scenarios, and so multitasking is a good example of one we're already talking to people about, we're looking for the right way to implement it. So that's something you'll see come from us at some point.”
(en) « Seamless voice-to-video call switching with LTE », : « ... the only Android phones that support UMTS video calls are the Samsung Galaxy series of phones. Other than that, only Symbian and Windows Mobile (not Windows Phone) phones support UMTS video calls ».