Learn how to PUK unlock the Samsung Galaxy S4. If you enter a PIN code incorrectly several times in a row, the device blocks you from attempting again and may also permanently damage your SIM card.
On this page:
Confirm that you are receiving one of the following or similar error messages on your device.
Important: You must call Customer Care for the PUK code. Entering the wrong code can permanently damage your SIM card.
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