Anyone know how to do it? 

try 0000 or the last 4 of your phone number or the last 4 of the phones previous phone number...other than that idk, maybe go to your service providers store? 

No, not the security, I mean to unlock the phone so it can be used for any provider 

There are places u can go to that will do it, I think. I know in colorado there was a shop u could go to that did it. 

Goooogle it! 

Can you take it to the new provider and have them do it? 

Nice Mary I didnt even think of that... 

There are so many ways usable to unlock your phone. If your phone contains sim lock then, contact your service provider /use any unlocking software/use IMEI unlock method/Factory reset method to unlock your phone. Note: Service provider will take certain period to deliver a code to unlock your phone. If you want to unlock your phone quickly, contact any of the service providers like Unlock-free.com who render the code in online. 

wow super. thanks for that^ new person. 

don't just hand out your imei number