I have bought this http://r.ebay.com/g95heu ( http://en.wikipedia.org/wiki/T-Mobile_myTouch_4G_Slide ) on Ebay, and placed my NZ Vodafone SIM card in it.
Calls and SMS work OK. Internet works only via Wi-Fi, not via the SIM card. I have tried both my regular Vodafone SIM card, and the data-only SIM card taken out of my Vodafone hotspot.
Is this phone supposed to work with Vodafone in NZ?