I was in the Ohari valley (just outside Johnsonville, Wellington) on Saturday at a wedding. My 2degrees phone (a bog standard midrange Nokia) didn't get a signal, and it didn't roam to Vodafone like I thought it should out of 2degrees coverage. A friend had an iPhone on Vodafone with near full signal strength.
Shouldn't my 2degrees phone roam to Vodafone if there's no 2degrees signal? It has before, in Wanganui over the past couple of years.