FYI, I was in Chch LTE coverage today but the network connection didn't work when connected through the default iPhone APN. I had to switch APN to "vodafone" to get it to get LTE working. Managed to get 50/15Mb from a quick speed test, not bad.
3G worked fine using the default iPhone APN, just not LTE.
Is this a network issue, or expected behaviour? I assume there are no drawbacks to me being on the "vodafone" APN all the time?