Battery
saver mode suppresses this sort of background app refreshing and throttles down
your phone’s performance—among other things—to extend your battery life. The tradeoff,
of course, is that you give up some processing speed and convenience on your
phone. Your phone will feel sluggish and unresponsive, but at least you'll have
something to tide you over until you can get back to a charger.
Battery
saver mode switches itself off when your phone is connected to a power outlet,
however.
Setting it
up
Battery
saver mode’s controls are buried in the Settings app: Open the Settings app,
then navigate to the Battery section—it’s under the Device heading. You can
get here
more quickly by tapping the battery percentage reading at the top of the Quick
Settings shade.
Next, tap the menu button—denoted by three dots—and then tap Battery saver. On the following screen, toggle the on/off slider switch to the “on” position.
And...that’s it. when you turn on battery saver mode, the status bar and navigation bar at the top and bottom of your screen will turn orange. to turn off battery saver mode, slide down the notifications screen then tap Turn off battery saver.
Battery
saver has one more trick it can pull off—it can kick in automatically when your
battery gets low. To use this feature, go back to the battery saver screen in
the Settings app, tap Turn on automatically, and then tap either at 5% battery
or at 15% battery. Battery saver will now kick in whenever you reach the
low-battery threshold of your choice.
