HTC EVO 3D User Manual - Page 56

Alert Notification Set your device to alert you with an audible tone when you are not within the Sprint coverage area or when you make an emergency call. 1. Press > and tap Settings > Sound. 2. Tap Emergency tone, and then tap Alert. 3. Press . Enabling Touch Tones You can set the device to play a sound when you are using the phone keypad or tapping the screen. 1. Press > and tap Settings > Sound. 2. Do any or all of the following: Ⅲ Select the Audible selection check box to set the device to play a sound every time you tap the screen. Ⅲ Tap Audible touch tones, and then tap Long tones or Short tones to set the device to play a sound when you are using the phone keypad. 3. Press . Display Settings Changing the Screen Timeout Period After a period of inactivity, the device screen turns off to conserve battery power. You can set the idle time before the screen turns off. 1. Press > and tap Settings > Display >  Screen timeout. 2. Tap the time before the screen turns off. Note: Extended screen timeout periods reduce the battery's talk and standby times. Tip: To turn off and lock the screen quickly, press . 44 2B. Settings