Samsung Galaxy S21 5G User Manual page 156

Settings
Set up SIM card lock
You can set up a PIN to lock your SIM card, which prevents unauthorized use of your
SIM card if someone attempts to use it in another device. Availability of this feature
depends on your carrier.
◌
From Settings, tap
SIM card lock and follow the prompts.
• Tap Lock SIM card to turn on the feature.
• Tap Change SIM card PIN to create a new PIN.
View passwords
You can have characters displayed briefly in password fields as you type them.
◌
From Settings, tap
Make passwords visible to turn on the feature.
Device administration
You can authorize security features and apps to have administrative access to your
device.
1. From Settings, tap
Device admin apps.
2. Tap an option to turn it on as a device administrator.
Biometrics and security > Other security settings > Set up
Biometrics and security > Other security settings >
Biometrics and security > Other security settings >
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