I remembering hearing (or reading) somewhere years ago that both Telecom and Vodafone said they had coverage of SH1 from one of the country to the other. While this is mostly true, there's still not much north of Kaitaia. Now the road is totally sealed, SH1 may see more tourists heading up to Cape Reinga, which could be a good source of income for both companies.
Before anyone says "there's nothing up there!", I agree - but there are a lot of other places on SH1 with 3 people living in them yet they get a cellphone signal too.
So, before I take my next trip up north, can anyone (from either Telecom or Vodafone) tell me if there are any plans to complete the networks coverage footprints to include the missing parts of SH1?