Thanks Meter 6
Join Date: Feb 2011
Location: Carlow, Ireland.
I don't know where your from OP, but if you're from anywhere in the EU, your phone carrier is legally obliged by EU law to allow you unlock your phone from their network.
There may be a certain length of time from when you purchased the phone/started the phone contract (here in Ireland I think it's 90 days, at least for PAYG phones).
You just have to ring up your carriers customer support and they should give you the unlock code (and possibly how to enter the code), once you've verified you're the owner of the phone/contract.
Hope this helps