Before getting down to it, have you tried putting a different Sim in your phone to see if it works? You have and it doesn't? Okay then; there are two distinct ways to unlock mobiles:
- Using a code. This is known as 'remote unlocking' and involves getting and entering a special code into your phone, which gets rid of all the restrictions as if by magic, and is by far the most common method.
- Using a clip and cable. This involves unlocking the phone using a specific data cable and software, and applies to a limited number of handsets. Most people will send their phone to a dedicated unlocker for this service, but it's possible to do it yourself if you've the technical mouse.