Philips az@lis 238 - Manual (Page 7)

4
Before your first call
The SIM card
To use your phone, you must insert a valid SIM card for your GSM
subscription.
This card contains your telephone number. It also has memory to store the
phone numbers and messages you wish to retain. If you use this card on
another phone, you still have the same phone number, stored numbers and
messages.
PIN and PUK codes
The PIN code is a secret code in your SIM card to protect it from abusive
use. If you or anyone else enters a wrong PIN code 3 times, your SIM card is
blocked. To unblock it, you must request the PUK code from your Network
Operator.
Read the safety instructions in the
Precautions section before use.