Learn how to PUK unlock the Nokia Lumia 435. 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.
Confirm customers are receiving one of the following or similar error messages on their devices.
- "PIN code blocked. Enter PUK code."
- "Enter PUK code"
- "SIM card locked. Emergency calls only. Please contact Customer Care."
- Enter the PUK code and tap enter.
- Enter a PIN code of your choice and tap enter.
- Re-enter the PIN code and tap enter.
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