The company, which has struggled in recent years to stem sharp cell phone market share losses, posted a loss of $231 million, or 10 cents per share compared with a loss of $194 million, or 9 cents per share in the same quarter a year ago.
It had forecast a first quarter loss in the range of 10 cents to 12 cents per share.
Revenue fell to $5.37 billion from $7.45 billion, The average Wall Street estimate was $5.55 billion, according to Reuters Estimates.
Motorola, whose biggest competitors are Nokia
The company forecast a second quarter loss per share from continuing operations in a range of 3 cents to 5 cents.
(Reporting by Sinead Carew; Editing by Derek Caney)