"The results speak for themselves," Lazaridis said.
Sterne Agee analyst Shaw Wu said RIM returned to profitability much sooner than expected. He said it was driven by higher gross margins, cost reductions and the sale of the new BlackBerry.
In a research note, Wu wrote that RIM "is here to stay with stabilization in its business and balance sheet" but said the key question remains whether the company can maintain momentum in an industry dominated by Apple and Google's Android software.
The Z10 has received favorable reviews since its release, but the launch in the critical U.S. market was delayed until late this month as wireless carriers completed their testing.
A version with a physical keyboard, called the Q10, won't be released in the U.S. for two or three more months. The delay in selling the Q10 complicates RIM's efforts to hang on to customers tempted by the iPhone and a range of devices running Android. Even as the BlackBerry has fallen behind rivals in recent years, many users have stayed loyal because they prefer a physical keyboard over the touch screen on the iPhone and most Android devices.
RIM, which is changing is formal name to BlackBerry, said it expects to break even in the current quarter despite increasing spending on marketing by 50 percent compared with the previous quarter.
"To say it was a very challenging environment to deliver improved financial results could well be the understatement of the year," Heins said during a conference call with analysts.
Heins said more than half of the people buying the touch-screen Z10 were switching from rival systems. The company didn't provide details or specify whether those other systems were all smartphones. He said the Q10 will sell well among the existing BlackBerry user base. It's expected in some markets in April, but not in the U.S. until May or June.