How to encrypt oppoa33 short messages?

The specific operation of OPPOa33 SMS encryption is as follows:

1. Open the phone screen, select the setting option and enter the page;

2. Then select the account in the "General" column and the security service command in the "Security" column;

3. After opening the security service, drop down to find the personal security bar in the screen, and then select the program encryption command;

4. Then open the settings icon on the right side of the program encryption to open the program encryption, and then click the encryption program below to select the program to encrypt;

5. Then select the program you want to encrypt in the unencrypted program, light the open icon, and you can see your encrypted program in the encrypted program column;

6. Then return to the homepage of program encryption and select Settings to set the password of program encryption. Select the change password option, and then draw the pattern you like. Then when you open the encryption program again, you need to draw the password pattern.