Acronym for General Packet Radio Service
This is how VodaFone provide IP connectivity over their cellphone network.
the number to dial for GPRS is "*99#"
The default APN (Access Point) for VodaFone is www.vodafone.net.nz, this however is on their internal network and will not let VPN (PPTP) connections through. To remedy this they provide a world accessible service using either the Internet or web.vodafone.net.nz APN's.
Compare CDMA