How to encrypt files or folders without jailbreaking Apple 5s?

2. The specific method is to open the settings of iphone, select General, click Access Restrictions, and then click Enable Access Restrictions;

3. After opening access restrictions, click the application on the access restrictions page and select the software level to hide. If you want to hide the related software of 17+, click 17+ and close the checkmark after 17+ to hide this kind of software.