codes
Your phone's four-digit unlock code is originally set to
1234 or to the last four digits of your phone
number. The six-digit security code is originally set to
000000. Your service provider may reset these codes
before you get your phone.
If your service provider didn't change the unlock code,
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lock & unlock phone
You can lock your phone manually or set it to lock
automatically whenever you turn it off.
To lock or unlock your phone, you need the four-digit
unlock code. A locked phone still rings or vibrates for
incoming calls or messages, but you have to unlock
it to answer.