Sprint's LG G4 receives Android 6.0 update
Another new feature is the addition of contextual search with Google Now on Tap. The updated virtual assistant will provide search results based on what is on your screen. And the changes to app permissions allow you to decide whether to give or deny permissions on a feature-by-feature basis. The update brings the software version to LS991ZV9. It includes Sprint's Global Roaming feature along with the Android 6.0 update.
Before you start the updating process, you should make sure you are connected to a Wi-Fi network. After all, major updates like this one are usually quite large. As a result, you should also make sure that your battery is charged to at least 50%.
source: Sprint via AndroidCentral