How do I change my PIN code?

Certain devices enable you to change the PIN code directly in the phone's menu.

If this option is not available, you can change your PIN code manually:

• Enter the following combination into your mobile:

** 04*OLD PIN*NEW PIN*NEW PIN#, then press the "call" key.

Do you prefer not to have to enter your PIN code when you switch on your mobile?

You just need to deactivate this option. But you run the risk of your SIM card being used without your authorisation. And you also run a greater risk : that everyone will able to use your mobile if it is stolen.