Spark New Zealand reports it is overtaking its rival in 4G mobile data services, after making rapid strides in its network build over recent months.\nSpark New Zealand says it now has 4G mobile data services in more than 70 cities, towns and other locations around New Zealand, covering roughly two-thirds of the population.\n\u201cSince we launched 4G just over a year ago, we\u2019ve frankly been playing catch-up with our main competitor, who had a head start on us with their 4G build,\u201d David Havercroft, chief operating officer, Spark Connect, says in a statement.\n\u201cWe\u2019ve now closed that gap. Based on our projected build over the next few months, we\u2019re confident that if we\u2019re not already in a leadership position in terms of coverage, we will be any time soon.\u201d\nHavercroft says he believes the improving quality of 4G services over the Spark Network was also beginning to leave competitors behind, as the company rapidly rolls out 4G services throughout the country, utilising the 1800MHz and newly-acquired 700MHz spectrum bands, as well as the introduction of Carrier Aggregation into Auckland.\n\u201cA quality mobile data network is crucial to New Zealand\u2019s economic growth, and as New Zealand\u2019s digital services company we are determined to deliver the best. We are forging a leadership position on 4G and the Spark Network is only going to keep getting better in the coming months.\u201d\n It\u2019s about future proofing. As our customers upgrade to newer and more sophisticated devices that can capitalise on these new 4G technologies \u2013 they are going to notice a big improvement in speeds on our network. David Havercroft, Spark NZ\nHe says the company is also surging ahead in building 4G coverage over the 700MHz spectrum band \u2013 which is crucial for providing mobile data coverage in rural areas.\n\u201cThe lower the radio spectrum frequency, the further its signal travels \u2013 which means in rural areas with low populations the 700MHz spectrum band is ideal because it can deliver great coverage from fewer cell sites. It will allow us to bring high-speed mobile broadband coverage to communities where previously it would have been uneconomic,\u201d said Havercroft.\nA 700 MHz cell site covers an area four to six times greater, and provides more effective coverage within buildings, than an equivalent 1800 MHz cell site delivering 4G services.\nSpark New Zealand launched commercial 4G services over 700MHz in August, with an initial focus in the Waikato region. The 700 MHz rollout will be a key focus of the company\u2019s mobile network improvements through 2015.\nHavercroft said Spark New Zealand was also investing in new 4G technologies that will drive improved experiences for mobile customers using the Spark Network.\n\u201cAll of our 4G cell sites are \u2018category 4\u2019 capable, which means they can give speeds up to 50 per cent faster than other 4G cell sites,\u201d says Havercroft.\n\u201cWe have also installed a technology called \u201cCarrier Aggregation\u201d on some of our cell sites in Auckland, with plans to roll it out further over time - this essentially doubles data speeds, by using two spectrum bands at the same time.\u201d\n\u201cIt\u2019s about future proofing,\u201d he adds. \u201cAs our customers upgrade to newer and more sophisticated devices that can capitalise on these new 4G technologies \u2013 and we know the average high end mobile device owner now upgrades their device every 18 months or so \u2013 they are going to notice a big improvement in speeds on our network.\u201d\nHavercroft says its partnership with Huawei \u2013 which has more than 70,000 staff research and development staff - is giving the Spark Network a competitive edge.\nLast month, Spark New Zealand and Huawei signed a memorandum of understanding to work on projects underpinning New Zealand\u2019s mobile future.