How can you unlock your Phone so I can use any sim cards.?

I want to know the way we can unlock the phone

How can you unlock your Phone so I can use any sim cards.?
Some cell phone providers like T-mobile will give you the code to unlock your cell phone after 3 or 6 months of service. Other companies like Qwest will not give you the code so you will have to find someone to Hack the code. Talk to the phone provider and try to get them to unlock it.