Samsung A886 - Manual (Page 16)

Getting Started
10
PIN2
A 4 to 8 digit PIN2 is supplied with some SIM cards to allow access to
specific functions supported by those cards.
If you enter an incorrect PIN2 three times in succession, the code is
disabled and you cannot access the functions until you re-enable it by
entering the PUK2.
To change the PIN2, see the Security section in “Phone” on page 151.
PUK2
An 8-digit PUK2 (PIN Unblocking Key 2) is required to change a disabled
PIN2. If a PUK was not supplied with your SIM card, contact your service
provider.
To re-enable your PIN2:
1. Enter the PUK2 and touch Confirm.
2. Enter a new PIN2 of your choice and touch Confirm.
3. When the Confirm PIN2 Code message displays, enter the same code
again and touch Confirm.
If you enter an incorrect PUK2 ten times in succession, the SIM card
becomes invalid. Contact your service provider for a new card.