From LTE to NFC, the GS4 comes with just about every connection imaginable. While each will come into play through the phone’s bevy of features, you’ll rarely need each type of connectivity raring to go at all times. So, we recommend disabling NFC, Bluetooth, location features, DLNA and even mobile data (i.e. LTE) when you’re not using them.
You can shut off most of the above features in the Quick Settings menu by swiping down from the top of the screen and tapping a button. All of these options are also accessible through the Connections tab in the Settings menu.