What the tests found
| Test | Winner | What it won |
|---|---|---|
| Opensignal, October 2026 | Spark | Best 5G network: 5G reliability, 5G download speed, 5G coverage and time on 5G |
| umlaut, June 2026 | One NZ | Best mobile network, for the fifth year in a row |
| Opensignal, October 2025 | 2degrees | The most awards that year, with One NZ winning 5G coverage |
Testers measure differently: Opensignal reads people's own phones in the background; umlaut combines drive tests with crowd data. When they disagree like this, the networks are close, and the right choice is the one with signal where you go.
Cheaper brands on the same networks
| Network | Cheaper brands that use it |
|---|---|
| Spark | Skinny |
| One NZ | Kogan Mobile |
| 2degrees | Warehouse Mobile |
What to check for your own use
- Coverage outside the cities. New Zealand has long rural roads and national parks where coverage differs a lot; check each network's map for the places you travel.
- Prices include GST, so the advertised price is what you pay.
- Calling abroad: calling apps over data avoid international call charges.
Questions people ask
Which is the best mobile network in New Zealand?
It depends on the test: Spark led Opensignal's October 2026 5G results, One NZ was named best network by umlaut in June 2026, and 2degrees led Opensignal in October 2025. Check coverage where you live and travel.
Is Skinny on the Spark network?
Yes. Skinny is Spark's cheaper brand. Kogan Mobile uses One NZ and Warehouse Mobile uses 2degrees.