LG Spirit 4G MS870 Owner's Manual page 166

Settings
164
Power button ends call: Checkmark to allow to end calls by pressing
the Power/Lock Key.
Auto-rotate screen: Checkmark to allow the device to rotate the screen
depending on the device orientation (portrait or landscape).
Touch & hold delay: Allows you to set the touch and hold delay.
Install web scripts: Allows you to enable (or disable) installation of web
scripts.
PC connection
The PC connection menu allows you to manage the default USB connection
type and the On-Screen Phone function.
USB CONNECTION
USB connection type: Allows you to choose the default mode when
connecting your phone to a PC using a USB Cable.
Ask on connection: Checkmark to display a dialog box to confirm the
USB connection type when you connect to a PC.
Help: Opens a page to view connection help information.
LG SOFTWARE
On-Screen Phone: Checkmark to receive Wi-Fi connection request from
On-Screen Phone.
Help: Opens a page to view On-Screen Phone help information.
Developer options
Keep in mind that turning on these developer settings may result in irregular
device behavior.
USB debugging: Checkmark to turn on debug mode when USB is
connected.
Development device ID: Displays the development device ID.
Stay awake: Checkmark to set the screen to never timeout while
charging.