Set a SIM PIN Lock
Applicable products： HUAWEI Mate 20 X(dual sim card 6gb+128gb)，HUAWEI P30(single sim card 6gb+128gb、dual sim card 6gb+128gb、dual sim card 8gb+128gb)，HUAWEI P30 Pro(single sim card 8gb+256gb、dual sim card 8gb+512gb、single sim card 6gb+128gb、dual sim card 6gb+128gb、dual sim card 8gb+256gb、single sim card 8gb+128gb、dual sim card 8gb+128gb)，HUAWEI P20(dual sim card 4gb+64gb)，PORSCHE DESIGN HUAWEI Mate RS，HUAWEI Mate 20 Pro(single sim card 6gb+128gb)，HUAWEI nova 5T(dual sim card 6gb+256gb、dual sim card 6gb+128gb、single sim card 6gb+128gb、single sim card 6gb+256gb、single sim card 8gb+128gb、dual sim card 8gb+128gb)，HUAWEI Mate 40 Pro(single sim card 8gb+256gb、dual sim card 8gb+256gb)，HUAWEI Y9s(huawei p smart pro dual sim card 6gb+128gb)，HUAWEI P smart Pro，HUAWEI Mate 10(dual sim card 4 gb (ram) + 64 gb、single sim card 4 gb (ram) + 64 gb)，HUAWEI Mate 20 X (5G)(dual sim card 8gb+256gb)，HUAWEI Mate 10 Pro(dual sim card 4 gb (ram) + 64 gb (rom) (bla-l29b)、single sim card 6 gb (ram) + 128 gb、dual sim card 6 gb (ram) + 128 gb (rom))，HUAWEI nova Y61(dual sim card 6gb+64g、dual sim card 4gb+128g、dual sim card 4gb+64g)，HUAWEI Mate 10 Pro
Applicable system: HarmonyOS 2.0, EMUI 12.0, EMUI 11.0
Applicable products：
Applicable system:
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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 phone or switch to a new phone to prevent unauthorized 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 carrier. The number of digits and maximum number of attempts allowed to unlock your PIN and PUK are subject to your carrier.

  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 PIN, and follow the onscreen instructions.

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