service provider didn’t change these codes, you should change them:
Find it: Press M > w Settings > Security > New Passwords
You can also change your SIM PIN password.
If you forget your unlock code: At the Enter Unlock Code prompt, try entering 1234 or the last four digits of your phone number. If that doesn’t work, press Mand enter your
If you forget other codes: If you forget your security code, SIM PIN code, or PIN2 code, contact your service provider.
lock & unlock phone
You can lock your phone to keep others from using it. To lock or unlock your phone, you need the
To manually lock your phone: Press M > w Settings > Security
>Phone Lock > Lock Now.
To automatically lock your phone whenever you turn it off: Press M > w Settings > Security > Phone Lock > Automatic Lock > On.
Note: You can make emergency calls on a locked phone (see page 45). A locked phone still rings or vibrates for incoming calls or messages, but you need to unlock it to answer.
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