HTC Vivid ATT VIVID USER GUIDE - Page 183

183 Security Security Protecting your SIM card with a PIN Add another layer of security for HTC Vivid by assigning a PIN (personal identification number) to your SIM. Make sure you have the default SIM PIN provided by AT&T before continuing. 1. From the Home screen, press , and then tap Settings > 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 Vivid. This code may have been provided by AT&T when you received your SIM card. 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 Vivid with a screen lock pattern, PIN, or password Protect your personal information and prevent others from using HTC Vivid without your permission by setting a screen lock pattern, PIN or password. Your screen lock will be asked every time HTC Vivid is turned on or when it's idle for a certain period of time. 1. From the Home screen, press 2. Tap Set up screen lock. , and then tap Settings > Security.