HTC One dual sim

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Assigning a PIN to the micro UIM or micro SIM card

You can help to protect the micro UIM or micro SIM card by assigning a Personal Identification Number (PIN).
Important: Make sure you have the default PIN provided by your mobile operator before continuing.
  1. Go to Settings, and then tap Security.
  2. Select which card you want to assign a new PIN to.
  3. Choose to lock the card, enter the default PIN of the card, and then tap OK.
  4. To change the card PIN, tap Change UIM PIN or Change SIM PIN.

Restoring a micro UIM or micro SIM card that has been locked out

If you enter the wrong PIN more times than the maximum number of attempts allowed, the micro UIM card will become ​“‍PUK-locked.”

You need a Pin Unlock Key (PUK) code to restore access to HTC One. Contact your mobile operator for this code.

  1. On the Phone dialer screen, enter the PUK code, and then tap Next.
  2. Enter the new PIN you want to use, and then tap Next.
  3. Enter the new PIN again, and then tap OK.
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