1. First select “Setting”, then select “Cellular “.
  2. In this section, you must select the SIM PIN.
  3. On this page, disable the SIM PIN.
  4. In this step, after entering your first four-digit PIN code, select the DONE to disable the PIN code.
  5. If you want to change your device PIN, select Change PIN.
  6. In this step, enter the PIN code of the SIM Card.
  7. Then enter your preferred 4-digit PIN code.
  8. To verify the new PIN, try this step again to change the SIM Card PIN.