Motorola Slides 8.9% on Warning

Motorola (MOT) was down 8.9% in preopen Instinet trading after the company said it would miss its first-quarter sales and earnings estimates, which were last issued in January. The mobile phone maker said it could post an operating loss if the economic slowdown persists.

Among other wireless phone companies,

Nokia

(NOK) - Get Report

was down 7.5% on Instinet and

Ericsson

(ERICY)

was down 4.6% in preopen

Island

trading.

Goldman Sachs

downgraded Nokia from its recommended list to market outperformer.