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If the SIM card lock is enabled, the PIN of the SIM card is queried every time the Android smartphone is started, and if the SIM lock is (not) desired, it can be turned on or off in the security settings.

Note: The current PIN is required to enable or disable the SIM PIN request.

Android 12
Step 1: Tap on  Settings
Step 2: Tap on  Security
Step 3: Tap on  SIM card lock
Step 4: Enable or disable  Lock SIM card
Step 5: Enter the  SIM PIN  and tap  OK
  1. Tap on Settings
  2. Tap on Security
  3. Tap on SIM card lock
  4. Enable or disable Lock SIM card
  5. Enter the SIM PIN and tap OK
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