probably a dumb question ...

i am using an LG P500 on a vodafone plan
when i search for available networks i see vodafone and sometimes nzcomms

with my wife's iphone (from the same location) i can see vodafone telecom and 3 degrees

so why does the vodafone mobile not show the telecom network?



actually this is part of a bigger question

i have an airtel sim card from india
which works in my LG when i am in india
but cannot connect to a network when i am in nz

i have a vague idea that telecom provides roaming services for international sim cards??

can anyone help me out here?
thanks!