My Nexus had this option....but I don't see it on the Note 3. At this point, I'm not having any issues, I have the display on the brightest, live wallpapers, gps, Bluetooth.....just about everything turned on, and it's sooooo much more efficient than my Nexus....I couldn't go anywhere w/o an external battery pack. Over night, w/o power, I'd wake up w/ the Nexus at 60-70%....now w/ the note 3 it might be 96%....it's great...now I don't walk around looking like a suicide bomber w/ wires from phone to external battery....but I WOULD like the Note 3 to stay alert when it's plugged in to power.