How does Apple encrypt short messages?

Click Settings-General-Access Restrictions;

Click to enable access restrictions, and then set a password.

Or open the folder properties and select Hide to prevent it from being seen.

If you still can't hide, you can try to download third-party management software, which has the function of setting passwords.

Advantages of SMS encryption

The benefits of SMS encryption are obvious. After all, SMS chat records are a kind of private information. If you are accidentally seen by others, there is always a feeling that your secret is known. By encryption, short messages can only be seen by themselves, which can effectively protect users' privacy.