Methods/steps
Open the nailing client, and then click My in the lower right corner, as shown in the figure below.
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Then slide my page to the bottom, and then click Open Settings, as shown in the figure below.
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Then click the account and security at the top, as shown in the figure below.
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Select the security password lock on the account and security page, as shown in the figure below.
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Then, on the security password lock page, click to open the security password lock password.
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The password setting interface shown below will pop up later, enter the password you want to set, and then enter it again.
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We can see that the screen lock protection and secret chat dialogue protection are turned on under the security password lock. If you just want to turn on the screen lock protection, you can turn off the secret chat dialogue protection.
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