User Manual

Security settings
Assigning a PIN to a nano SIM card
You can help to protect the nano SIM card by assigning a Personal Identification Number (PIN).
Make sure you have the default PIN provided by your mobile operator before continuing.
1.
From the Home screen, tap
Settings Security.
2. Depending on the phone model, do the following:
§ Single SIM model: Tap Set up SIM card lock.
§ Dual SIM model: 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 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 card
will become “PUK-locked.”
You need a Pin Unlock Key (PUK) code to restore access to HTC U Ultra. 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.
Setting a screen lock
Help protect your personal information and help prevent others from using HTC U Ultra without
your permission.
Choose to set a screen lock pattern, numeric PIN, or other means of locking your phone. You'll be
asked to unlock the screen every time HTC U Ultra is turned on or when it’s idle for a certain period
of time.
1. From the Home screen, tap Settings Security.
2. Tap Screen lock.
171 Security settings