[2][3] One NZ is the largest wireless carrier in New Zealand, accounting for 38% of the country's mobile share market in 2021.

The company employs over 3,000 people and has operations nationwide, with its main offices based in Auckland, Wellington and Christchurch.

[8] The company has invested hundreds of millions of dollars in its mobile network, improving capacity in congested urban areas.

[9] In June 2014, Vodafone New Zealand was ranked the fastest mobile network on the planet by speed-testing service Ookla.

[9] It ceased to be a subsidiary of the London-listed company Vodafone Plc on 31 July 2019, when its sale to a consortium comprising Infratil Limited and Brookfield Asset Management Inc. was settled.

[18] Vodafone NZ states that customers' ability to roam on networks overseas will be unaffected by the name change.

[21] On 7 June 2023, Infratil announced that they would be taking full control of One NZ by buying out all shares from Brookfield Asset Management.

[23] In August 2023, One NZ was fined over $3 million for breaching the Fair Trading Act by misleading consumers about their FibreX service.

[25][26] In October 2024, One NZ received approval to test Starlink Satellite to mobile SMS service.

This came as the FCC voted unanimously in favor of its Supplemental Coverage from Space (SCS) regulatory framework on 14 March 2024.

Vodafone has constantly increased its market share and surpassed Telecom in mobile customers.

It maintained interconnect agreements with Telecom New Zealand, Clear Communications and some smaller service providers.

[citation needed] On 10 June 2015, Vodafone NZ acquired WorldxChange, a New Zealand based telecommunications business.

In February 2022 Vodafone NZ signed a conditional agreement to acquire a 60% majority share in cyber security specialist company Defend.

[33] One NZ committed to acquiring Dense Air, in order to use their 2x35MHz of 2600 MHz spectrum rights, and immediately deploy it for use on its 5G network.

In March 2016 Vodafone New Zealand announced plans to shut down its 2G (GSM) network, beginning with voice and messaging services.

Vodafone's Spokesperson Elissa Downey commented that they would keep the GSM network running until 2025, although it would only support devices using GSM data such as electricity meters that send readings over the network, and that they would be announcing the end date for its 2G voice service soon.

[40] This announcement came following the company's criticism of rival operator Spark's billboard campaign that claimed "Vodafone's 2G network is shutting down" and invited customers to "switch before [they're] ditched",[41] despite neither Spark, nor its child division Skinny Mobile – whom the campaign was run under – operating a compatible 2G network.

The campaign was denounced by Vodafone as "pretty misleading", shortly followed by the announcement that 2G voice services would not be ended any time soon.

Rural Broadband Initiative (RBI) coverage: One NZ have a contract with the New Zealand government to provide fixed cellular access to the internet with antennas mounted on the outside of buildings, homes and businesses at speeds of at least 5 Mbit/s.

By January 2016, One NZ had actively extended its 4G network throughout key rural areas, and was on track to deliver speeds as high as 100 Mbit/s.

[45] The 700 MHz 4G LTE frequency used in New Zealand is APT band 28 and was first launched by Vodafone in Papakura on 21 July 2014.

This means other companies can resell One NZ's network services (data, telephone and SMS) under their own brand name.

[49] This differed from a roaming arrangement previously in place with 2degrees, who offloaded customers onto the (former) Vodafone network when they were not in a 2degrees mobile coverage zone.

On Wednesday 10 August 2005 Vodafone introduced a new 3G network employing the UMTS technology widely used in Europe and elsewhere.

Vodafone began rolling out HSPA+ data services on its UMTS network in 2011; at the time of writing (May 2012), Auckland, Wellington and Christchurch have coverage.

[52][53] The first iPhone 3G released on 11 July 2008 was sold by Vodafone in Auckland, New Zealand to 22-year-old student Jonny Gladwell at 12:01 am NZST.

[57] In June 2016, Vodafone upgraded its cable network to DOCSIS 3.1, in order to support gigabit speeds.

The TV service was originally operated over a cable network formerly owned by TelstraClear in Auckland, Wellington, and Christchurch.

Chilli, an adult channel was also available until 2006 when CEO Alan Freeth discontinued the product on moral grounds.