Download Weekly: 3G shutdown begins in Dunedin

Carrier's share remains stable

In its latest report, Telcowatch says One New Zealand was the leading mobile service provider in fourth quarter of 2025 in terms of market share. One NZ has a 36% share of the market.

While this puts One NZ well ahead of second-place Spark (32% market share), Telcowatch regards Spark’s budget-price Skinny brand as a separate entity.

Skinny has a 6% market share. If this is combined with Spark’s 32%, then Spark remains the overall market leader with a 38% share.