ACCESS DISPLAY SETTINGS: From your device's web browser, go to http://attwifimanager. Enter your Username and Password, then click SIGN IN. Note: Ensure that your device is connected to the Netgear Nighthawk's Wi-Fi network. For more information, please see the Connect Devices to Wi-Fi or Connect PC or Mac to Wi-Fi tutorials.
Click SETTINGS at the top of the page.
Click Advanced Settings, then click Device.
ADJUST SCREEN BRIGHTNESS: Click and drag the Screen Brightness slider to the desired brightness.
ADJUST SCREEN TIMEOUT: Click the Screen Timeout drop-down menu, then click the desired option.