174Settings
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SIM change alert: Prevent unauthorized changes to your SIM
card by being alerted whenever an app or service attempts to
change data on your SIM card.
Unknown Sources
Enable installation of non-Google Play applications.
1. From a Home screen, tap Apps > Settings.
2. Tap Lock screen and security > Unknownsources to enable this
option.
Warning: Enabling installation of third-party applications can cause
your device and personal data to be more vulnerable to attacks by
unknown sources.
Secure Folder
Lock your private content and apps to enhance security. You must sign
in to your Samsung account in order to use Secure Folder. You must
also set a secure lock for your device.
1. From a Home screen, tap Apps > Settings.
2. Tap Lock screen and security > Secure Folder and follow the
prompts to secure content on your device.