Samsung GALAXY S7 EDGE User Manual page 19

When to Charge the Battery
When the battery is low and only a few minutes of
operation remain, the device sounds a warning tone at
regular intervals.
In this condition, your device conserves its remaining
battery power by dimming the screen.
When the battery level becomes too low, the device
automatically turns off.
For a quick check of your battery level:
► View the battery charge indicator located in the top
right corner of your device's display. A solid color
( ) indicates a full charge.
You can also choose to display a percentage value.
Viewing a percentage value can provide a better idea
of the remaining charge on the battery. For more
information, see "Battery" on page 155.
Getting Started 7 Assemble Your Device