KiwiSurfer:

 

Aucklandjafa:

 

100% it will never be economically viable, but One's (and 2d for that matter) coverage is quite behind Spark's. They are building out towers like nobody's business so it may only be a matter of time before they are all on par.

 

 

It really does depend on the area. I swap between all 3 carriers every year or so and Spark in my experience are the one catching up in the places I frequent (mostly Auckland/Northland/Waikato). One/2deg is building out new sites and upgrading existing sites at a consistent pace and Spark not so much outside of their 5G upgrade programme. To be fair all three get a boost from the RCG towers -- to the point I don't think there's many new rural towers being built by the 3 carriers anyway. Spark may still the best carrier in a slowly decreasing list of certain areas (Pukekohe and SH1 between Auckland and Hamilton are two of my bugbears with 2deg/One coverage) but the days of them being the best carrier in every part of NZ is long gone. But their reputation remains!

 

Parts of Northland, especially the Hokianga, as well as the East Cape - One has it sewn up. But having used One/Voda a couple of years ago, and traveling around the country, there were times I wanted to throw my phone out the window when people on Spark had flawless coverage. As I said, One seem to building out their network quite a bit, so it's probably not too far away where all telcos are much of a muchness