Assigning A Pin To The Nano Sim Card - HTC One User Manual

308 Settings and security

Assigning a PIN to the nano SIM card

You can help to protect the nano SIM card by assigning a PIN (personal
identification number) that you enter before accessing the nano SIM.
When you're prompted to enter the default SIM PIN, enter 1111.
1. Go to Settings, and then tap Security.
2. Tap Set up SIM card lock, then select Lock SIM card.
3. Enter the default PIN of the nano SIM card, and then tap OK.
4. To change the nano SIM card PIN, tap Change SIM PIN.
Restoring a nano SIM card that has been locked out
If you enter the wrong PIN more times than the maximum number of
attempts allowed, the nano SIM card will become "PUK-locked."
You need a 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.