HTC One S User Manual - Page 170

170 Settings and security Protecting your SIM card with a PIN Add another layer of security for HTC One S by assigning a PIN (personal identification number) to your SIM. Make sure you have the default SIM PIN provided by your mobile operator before continuing. 1. Slide the Notifications panel open, 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 S. 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. Protecting HTC One S with a screen lock Protect your personal information and prevent others from using HTC One S without your permission by setting a screen lock pattern, face unlock, PIN, or password. You'll be asked to unlock the screen every time HTC One S is turned on or when it's idle for a certain period of time. 1. Slide the Notifications panel open, and then tap > Security. 2. Tap Screen lock. 3. Select a screen lock option and set up the screen lock. 4. Tap Lock phone after, then specify the idle time before the screen is locked. You can also clear Make pattern visible or Make passwords visible if you don't want your screen lock to display as you enter it onscreen.