How to query the password

In order to protect your safety, Unicom's mobile phone card is protected by PIN code and PUK code. The initial password of PIN code is 1234. You can't check your PIN code through Unicom. If you need to modify the PIN code, you can modify it in the "Settings" menu of the mobile phone. For example, for Android phones, you can enter the settings in Settings Location and Security SIM Card Lock Set SIM Card Lock Change SIM Card PIN. The specific setting path can also be found in the mobile phone manual.

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