HTC Desire S User Manual - Page 188

188 Security Security Protecting your SIM card with a PIN Add another layer of security for your phone 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. 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. Emergency calls can be placed at any time without requiring a 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 the phone. This code may have been provided by your mobile operator 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 Next. Protecting your phone with a screen lock pattern, PIN or password Protect your personal information and prevent others from using your phone without your permission by setting a screen lock pattern, PIN or password. Your screen lock will be asked every time your phone 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.