Modify SIM PIN - Samsung Galaxy Tab S3

The SIM card must be locked (SIM PIN on) in order to change the current SIM PIN.

1. From a Home screen, swipe up or down from the center of the display to access the apps screen.
2. Navigate: Settings > Biometrics and security (left pane).
3. From the right pane, tap Other security settings.
4. From the SIM card lock section, tap Set up SIM card lock.
5. Tap Change SIM card PIN.
6. Enter the old SIM PIN (current SIM PIN) then tap OK.
   The default SIM PIN is 1111.
7. Enter the new SIM PIN then tap OK.
8. Re-enter the new SIM PIN then tap OK.