BlackBerry Friday said it would cut 4,500 jobs as the struggling Canadian smartphone maker retrenches in the face of hefty losses and weak sales of its ne handsets. BlackBerry said it expects a loss of $950 to $995 million in second quarter. The company\'s highly-publicized launch of the BlackBerry 10 earlier this year failed to ignite sales. The company has said it is examining \"strategic alternatives,\" including a possible sale of the company.