After the sale to Microsoft, Nokia's biggest business will be its unit selling wireless-network equipment to mobile-phone carriers, called Nokia Solutions and Networks. The unit has struggled amid intensifying competition from Sweden's Ericsson AB and China's Huawei Technologies Co. and ZTE Corp. The NSN division started a program in late 2011 to cut 17,000 jobs, or about 23 per cent of its total. Nokia said it will also keep its mapping and location services business, called Here, and its technology development and licensing division.