Correction at 8:15 a.m. PST: Due to an editing error, Motorola's standing in the handset industry was misstated. Motorola is the No. 3 handset maker worldwide.
Embattled Motorola CEO Ed Zander will resign from his post at the end of the year, the company announced Friday.
Greg Brown, Motorola's chief operating officer and president, will take over as the company's CEO. Brown was also appointed to the Motorola board in July.