Apps and processes are listed from highest to lowest percentage of power consumption. Review any high or unusual battery drain.
From a Home screen, navigate: Apps icon>Settings > Battery (Device section).
Review the current battery status.
Percentage indicates the remaining battery life, charging status.
"Charging" is only displayed if device is connected to a charger and the time to full charge is being calculated. After a few minutes, the time to full charge will be displayed.
Tap the battery history graph (located below the battery percentage).
The Battery history graph displays the time since it was last charged to 100%.
View the history of battery usage.
Battery Usage line graph.
Color coded Mobile network signal bar graph.
Signal strength has an effect on battery life.
Color coded bar graphs for Wi-Fi, Awake, Screen on and Charging.
Wi-Fi: Wi-Fi radio is on/off.
Awake: Running tasks/apps, however the screen is not necessarily on.
Screen On: Indicates the screen is visible, not in standby.
Charging: Indicates when a device is plugged into a charger and charging.
The charging line shows periods of partial charging (in green) since the last complete charge.