Nokia 20 User Manual page 13

If you do not get an
To enter the PIN code, type
2. HyperTerminal connection" for details.
If entering the PIN code fails three times successively, the code is blocked. Refer to section
"Troubleshooting".
Changing the PIN code
To protect your SIM card against unauthorised use, it is good to change the factory setting PIN code
supplied by your service provider.
The PIN code can be 4 to 8 digits long. To change the PIN code, enter the following AT command in the
HyperTerminal connection window:
old PIN code and NEWPIN the new code. Press ENTER. See "Figure 2. HyperTerminal connection" for
details.
response, refer to section "Troubleshooting".
OK
at+cpin="PIN"
at+cpwd="sc","OLDPIN","NEWPIN"
©2001 Nokia Mobile Phones. All rights reserved.
where PIN is your PIN code. Press ENTER. See "Figure
where OLDPIN is the
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