How do i unlock my nokia 6630? If possible without buy the code from nokia or vodafone.

HI If you are asking for pin contact your service provider , he will give you a default pin . If you try pin more than few predefined no of times your phone will ask PUK code which can also be given only by your service provider(VODAFONE) which is specific for each and every mobile number . Donot try PUK code many times or else your sim will be blocked and you will need a new sim.
Contact your sim customer care(VODAFONE) department over phone. Its free of cost to get the pin or puk no.

If you take your phone to a mobile phone store in most markets or computer fairs they have people there that can unlock most phones.

Usually they charge between £10 and £20 for the service in the UK, depending on the phone.

There are also some on the internet that claim they can unlock via the net. I unlocked my 3 S2 Skypephone in this way yesterday and it cost me £10.

Try

http://www.foneszone.co.uk/unlock_form/Nokia/6630.php

They seem to tell you straight away whether or not they can do it, be careful though of some of the others.

Some of the others have unfair terms and conditions which state that if they can't unlock it they'll send you links to places that can unlock it, but you get no refund.

Foneszone does seem to be one of the genuine ones out there that tells you straight if it can't be unlocked. I tried them with my Motorola V3xx yesterday and they came back straight away telling me they couldn't unlock it, unlike some of the others.

So according to you, you are having a Network or Sim lock or Subsidy or Restriction. If you have any of the above Locks, unfortunately the problem can't be solved. For it you have to contact the Service Provider anyway. They are the only one to provide the code.
Thank you, Have a nice day.

You can get the Master Reset Code from service provider and Reset it....