He expected Motorola and Nokia shares would trade lower on Friday. "We are very disappointed with our fourth-quarter financial performance, but we remain committed to the strategic direction and long-term financial targets we discussed at our annual analysts meeting," Chief Executive Ed Zander said in a statement. Motorola estimated that unit sales in mobile devices rose 48 percent to 66 million units from a year ago, but said the results fell short of its expectations based on "an unfavorable mix" of regional and product-type sales. The company did not elaborate further. Snyder had forecast mobile device sales of about 61 million units and said he believed Motorola had likely sold more phones at lower prices. In October, Motorola posted third-quarter revenue that disappointed analysts' forecasts due to weaker-than-expected mobile phone sales, particularly in Europe. Nokia said at the time it had cut prices sharply to win market share, a move that squeezed its margins.