The details with the phone say it will lock to the network it is first used with.
I'm struggling to find information on how it actually works?
Is it a feature or software on the phone? Is it a feature of the uk networks pushing settings to the phone?
What is the best way to make sure it works in NZ?
Do I just leave it in the box till I get back to NZ or am I best to use it and then get the network to unlock it while in the UK?