I decided to try the battery saver. It puts up a notification that can't be swiped away, and it keeps insisting that i should close the couple of dozen apps "wasting" my battery, so i decided to give it a try. My Bluetooth connection to my Pebble no longer stays on. I can no longer use voice input for messaging and typing, as the voice features turns off almost as soon as it is turned on. My selected wi-fi defaults are no longer in effect - the defaults show up at the top of the list, but they no longer are connecting automatically. I removed the battery saver, but most of the best functions of the phone no longer work. Uh... may i say, i HATE this "feature"!!!