antoniosk:freitasm: The problem is that the Nokia Lumia 920 is unlocked, LTE capable but if I put a competitor's SIM card it won't work on LTE. If I go to the USA and get an AT&T SIM card it won't work on LTE.
Not actually a good experience from a top of the line handset.
Which is why you go for a brand that tells the operators what to do and is not beholden to them.
Even if it is fanboi widgets.
to provide some more context here:
the Nokia Lumia 920 devices that Telecom NZ sell here make no claim to offer 4G/LTE (check the side of the box)
so you can:
buy an open market unlocked Lumia phone yourself with 4G enabled
you can download the open market ROM image and flash it yourself
wait until Telecom rolls out 4G and enables it on their Lumia 920 model