Your Screen Is Too Bright

Smartphone screens look great these days, but unsurprisingly, crisp resolution and bountiful pixels are battery hogs. You probably don't need your device turned up to the highest setting. Go into your display settings and turn down the brightness on the screen; your eyes and battery will thank you.

You should also consider disabling auto brightness, which adjusts based on your perceived needs but can also raise the brightness of your display higher than it needs to be.

You can also change how long your screen remains active. Under the display settings on your phone, set it to fade to black after a few seconds. And head into the notifications settings to disable notifications from specific apps, so your phone doesn't light up every time a new alert comes in.