HTC Thunderbolt Manuel D’Utilisation

Security  1

Protecting your phone with a screen lock

Protect your personal information and prevent others from using your 

phone without your permission by setting a screen lock password, a 

PIN, or a lock pattern.
Your screen lock will be asked every time your phone is turned on or 

when it’s idle for a certain period of time.

Press HOME   > MENU, and then tap 

Settings > Security.

Tap 

Set up screen lock.

Tap one of the following:

None

Disable the screen lock you’ve previously created.

Pattern

Set a screen lock pattern by following the onscreen instructions.

PIN

Set a numeric password of at least four digits.

Password Set an alpha-numeric password.

4.  On the Security screen, tap Lock phone after, then specify the 

idle time you can allow before the screen is locked.

You can also clear the 

Use visible pattern on the Security screen if you 

don’t want your screen lock pattern to display as you draw it onscreen. 

Changing your screen lock

Press HOME   > MENU, and then tap 

Settings > Security.

Tap 

Change screen lock.

Enter your current screen lock to confirm that you want to 

change it.
Choose a different screen lock type, then enter your new pattern, 

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