Protecting Your Sim Card With A Pin - HTC One User Manual

Protecting your SIM card with a PIN

Add another layer of security for HTC One by assigning a PIN (personal
identification number) to your 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 SIM card PIN, and then tap OK.
4. To change the SIM card PIN, tap Change SIM PIN.
Restoring a SIM card that has been locked out
If you enter the wrong PIN more times than the maximum number of
attempts allowed, your 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.
Settings and security 275