Chicago--Reeling from the slowdown in cellular phone sales, Motorola Inc. said Tuesday that it would cut 7,000 more jobs. The layoffs follow the elimination in June of 2,500 jobs from the company's Harvard, Ill. facility. The latest cuts, which translate into 5% of the work force, would increase the reductions in Motorola's cellular phone operations this year to 12,000 or 36% of the unit's employees. The announcement came just one day after Motorola rival LM Ericsson said it was expecting a first-quarter loss of $500 million, instead of breaking even as it forecast in January. Motorola issued its own earnings warning last month.