Asus 4G-AX56 User Manual page 58

7. PIN Configuration
PIN code: Enter the 3G/4G provider's PIN code for connection
on SIM PIN Management if the SIM card is required.
• The default PIN code may vary with different providers. If
your ISP has disabled the PIN code verification by default,
you can skip the setting.
• If your ISP has enabled PIN code verification by default, you
will see the SIM lock status icon
and are required to enter the PIN code.
• You can manually enable the PIN code verification from your
router's web GUI or your mobile phone. You are also required
to enter the PIN code.
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on the status icon area