How to cancel the password setting of OPPO SMS?

Take OPPO R9S mobile phone as an example. The logout method is as follows:

First, turn on the mobile phone, find the item "mobile phone housekeeper" on the mobile phone desktop, and click enter.

Second, after entering the mobile phone housekeeper, find the item "Permission Privacy" and click Enter.

3. After entering the privileged privacy, find the "Application Encryption" item and click Enter.

Fourth, after entering, find the "information" column and close it, thus canceling the password setting of SMS.