Telecom Mobile, the mobile arm of former fixed line monopoly operator Telecom New Zealand, plans to upgrade parts of its network to Dual Carrier (DC)-HSPA+ technology by Christmas this year, reports the National Business Review. According to Telecom Retail CEO Chris Quin, around 2,500 people in Auckland have been trialing the technology ahead of a commercial launch concentrated on Auckland and Wellington later this year. By the end of 2013, around half of the country will be covered by Telecom’s DC-HSPA+ network, which allows for theoretical mobile data speeds of up to 42Mbps. The report follows the announcement by rival cellco 2degrees that it has deployed DC-HSPA+ on 10% of its network, a figure it aims to increase to 50% by the end of next year. The country’s largest mobile operator by subscribers, Vodafone, was the first to introduce the technology, which went live in December 2010. According to the National Business Review, Vodafone says it has 12% DC-HSPA+ coverage, which is expected to rise to 32% of its network by December and 52% by March 2013.