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Click [Settings] - [Security]; Click [Apply Encryption], enter your privacy password, and select the application you want to encrypt. Enable the \"Enable Password verification\" and \"Hide desktop icon\" functions. Enter the access number in the dial to bring up the hidden app. The details are as follows:
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1. Open the \"Settings\" option of oppo and click the \"Security\" option;
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2. Click the \"Application encryption\" option, enter the privacy password, and select the application to be encrypted;
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3. Enable [Start Password verification] and [Hide desktop icon] functions;
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4. Set related parameters as required. Enter the access number on the dial to open the hidden application.