Set a SIM PIN Lock
Applicable products： HUAWEI Mate Xs(dual sim card 8gb+512gb)，HUAWEI nova 7(dual card 8gb+256gb)，HUAWEI nova 9(dual sim card 8gb+128gb)，PORSCHE DESIGN HUAWEI Mate 30 RS，HUAWEI Mate 30(dual sim card 8gb+256gb、dual sim card 8gb+128gb)，HUAWEI Mate 30 Pro 5G(dual sim card 8gb+256gb、dual sim card 8gb+128gb)，HUAWEI Mate 30 Pro(dual sim card 8gb+256gb、dual sim card 8gb+128gb)，HUAWEI nova 8(dual sim card 8gb+128gb)，HUAWEI P40(single sim card 8gb+128gb、dual sim card 8gb+128gb)，HUAWEI P40 Pro+(dual sim card 8gb+512gb)，HUAWEI P40 Pro(single sim card 8gb+256gb、dual sim card 8gb+256gb)
Applicable products：
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Set a SIM PIN Lock

A PIN is the identity code of a SIM card, and can be set as the SIM card lock. After you set it up, you will be required to enter the correct PIN to unlock the SIM card every time you power on your device or switch to a new device to prevent unauthorised access.

If you have entered a wrong PIN and exceeded the maximum number of attempts allowed to unlock the PIN, you will need to enter the PIN Unlocking Key (PUK) then reset the PIN. If you exceed the maximum number of attempts allowed to unlock the PUK, your SIM card will be permanently blocked.

The PIN and PUK of your SIM card are provided by your network provider. The number of digits and maximum number of attempts allowed to unlock your PIN and PUK are subject to your network provider.

  1. Go to Settings > Security > More settings to enter the SIM lock settings screen.

  2. Enable Lock SIM card, enter the PIN, then touch OK.

    To change the PIN, touch Change SIM PIN1, and follow the onscreen instructions.

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