Mobile Unlocking Steps
Reach out to your provider to learn about its specific unlock policy. Most major mobile providers will unlock your phone as long as your contract is finished or you've paid the early termination fee to cancel your existing plan. They might also unlock your phone if you are travelling to another country and need to use a local carrier there.
Some companies are happy to unlock a phone if it is from one of their rivals. Reach out to your desired carrier and learn what their policy is.
Many phone manufacturers release unlock codes, which are very helpful if you are unlocking your phone on your own. You can run a Google search to find unlock codes for your phones make and model.
Check forums dedicated to cell phone unlocking. They are a great resource with a lot of people who are very knowledgeable.
If the above options dont appeal to you, there are also third-party sites and local retailers that specialize in unlocking phones
Regardless of which route you take, beware of one caveat