Configuring SIM Card Security Management

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Configuring SIM Card Security Management

Context

A personal identification number (PIN) identifies the user of a subscriber identity module (SIM), user service identity module (USIM), or user identity module (UIM) card and prevents unauthorized access to these cards. A PIN is a decimal integer of 4 to 8 digits. The initial PIN is set by a specific carrier.

If a user enters incorrect PINs for three consecutive times, the SIM, USIM, or UIM card is locked for security purposes. To unlock the card, the user needs to enter the PIN unblocking key (PUK). If the user enters incorrect PUKs for ten consecutive times, the SIM, USIM, or UIM card is locked permanently. In this case, the user needs to replace the card.

Procedure

Authenticate a PIN.
To prevent unauthorized users from using the SIM, USIM, or UIM card, enable PIN authentication on the 5G modem. After PIN authentication is enabled, the device authenticates the PIN each time the SIM, USIM, or UIM card is started. The 5G modem can be used only after a correct PIN is entered to unlock the SIM, USIM, or UIM card.
1. Run system-view
  The system view is displayed.
2. Run interface cellular interface-number
  The 5G cellular interface view is displayed.
3. Run pin verification enable [ auto ]
  PIN authentication is enabled for the 5G modem.
  
  By default, PIN authentication is disabled.
  
  In this step, you must enter a PIN to enable PIN authentication for the 5G modem.
4. Run pin verify [ auto ]
  The PIN is authenticated.
  
  In this step, wait for a certain period of time after a PIN is input automatically or manually for authentication. The PIN is authenticated successfully if the message "PIN has been verified successfully." is displayed.
Change a PIN.
Periodically changing a PIN improves the security of a SIM, USIM, or UIM card.
1. Run system-view
  The system view is displayed.
2. Run interface cellular interface-number
  The 5G cellular interface view is displayed.
3. Run pin verification enable [ auto ]
  PIN authentication is enabled for the 5G modem.
  
  By default, PIN authentication is disabled.
  
  In this step, you must enter a PIN to enable PIN authentication for the 5G modem.
4. Run pin modify
  The PIN of a SIM, USIM, or UIM card is changed.
  
  In this step, you must enter the old PIN once and enter a new PIN twice. When the message "PIN has been changed successfully." is displayed, the PIN has been changed.
Use a PUK to unlock a SIM, USIM, or UIM card
1. Run system-view
  The system view is displayed.
2. Run interface cellular interface-number
  The 5G cellular interface view is displayed.
3. Run pin verification enable [ auto ]
  PIN authentication is enabled for the 5G modem.
  
  By default, PIN authentication is disabled.
  
  In this step, you must enter a PIN to enable PIN authentication for the 5G modem.
4. Run pin unlock
  A PUK is used to unlock the SIM, USIM, or UIM card.
  
  In this step, you must enter the PUK once and enter a new PIN twice. When the message "Warning: PIN will be unlocked and changed. Continue? [Y/N]:" is displayed, enter Y. When the message "PIN has been unlocked and changed successfully." is displayed, the SIM, USIM, or UIM card has been unlocked.

Enterprise

Huawei Cloud

Carrier

Consumer

Corporate

Context

Procedure

Related Version

Related Documents

Digital Signature File