Check this auction (image links to larger version):

The questions:
Q. How can you connect this handset to the Vodafone NZ network??? I think you are smoking something!!! posted by: 4sale (35 ) 3:23 pm, Sat 12 Jan
I work in the telecom industry , looks like you are technically not keeping yourself posted.You can put an 021 number on this Sanyo 6600 & connect it to Vodafone network.Its called number portability.FYI , I dont ever smoke. 10:20 pm, Sun 13 Jan
Q. A comment more than a question: you can port an 021 *to* Telecom and use this mobile on the *Telecom* network. You can't connect this phone to Vodafone because it's not GSM/UMTS. It also doesn't accept a SIM card so there's no way to connect to Vodafone. posted by: freitasm (87 ) 7:31 am, Mon 14 Jan
I don't know who is the seller, and I have removed his name from the screenshot. But I hope he's not an example of people really working in the telco industry (oh, wait)...