In the fourth quarter, Android had 30.8% of the smartphone market globally, Gartner said, while Apple's iOS had 16% and Research In Motion's BlackBerry had 13.7%. Slightly more than 100 million smartphones were sold in the quarter.
Some analysts were unwilling to wager how well the partnership will do. "Perhaps combining the two companies can create one strong competitor, or perhaps they will both continue to limp along," said Jeff Kagan, an independent analyst. "I wish them much success but remain concerned until I see some kind of positive activity. This is difficult for them both."
Ballmer and Elop seemed undeterred by skeptics in an open letter posted on both the Nokia and Microsoft Web sites: "There are other mobile ecosystems. We will disrupt them. There will be challenges. We will overcome them. Success requires speed. We will be swift."
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