Remaining SIM PIN unlock attempts

This section is applicable to MC87xx, MC77xx, and SL80xx modems.

Background
Some applications need to check remaining SIM PIN unlock attempts and provide notifications to the user.
Recently, a custom AT command (AT+CPINC?) has been added to some minicards to support this feature.
In case where there is no support for AT+CPINC? command, the standard AT+CSIM AT command can be used.

Resolution

AT+CSIM=10,”0020000100” to check PIN1 remaining unlock attempts
AT+CSIM=10,”002C000100” to check PUK1 remaining unlock attempts
AT+CSIM=10,“0020008100” to check PIN2 remaining unlock attempts
AT+CSIM=10,“002C008100” to check PUK2 remaining unlock attempts

For example:
AT+CSIM =10,“0020008100”
+CSIM: 4,“63C3” displays PIN2 remaining unlock attempts

OK
Last number shows 3 attempts left

AT+CSIM =10,“002C008100”
+CSIM: 4,“63CA” displays PUK2 remaining unlock attempts

OK
Last character shows Hex A (decimal 10) attempts left.