Pirelli Discus DP-L10 User Manual page 15

Chapter 0
2 PUK and PUK2 codes (8 digits)
PUK stands for Personal Unblocking Key. If you have entered your PIN code
incorrectly 3 times, your SIM card will be blocked and you will be unable to
make and receive calls/text. The PUK code is required to change a blocked
PIN, and the PUK2 code is required to change a blocked PIN2 code. If the
codes are not supplied with the SIM card, contact your local service provider
for the codes. If the PUK code is entered 10 times incorrectly, the card is
permanently disabled and the SIM card has to be changed.
3 Barring password
The 4-digit barring password is required when using the
Call barring service.
You can obtain the password from your service provider.
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