Low Battery Indicator - Samsung Galaxy S4 User Manual

Low Battery Indicator

When the battery level is low and only a few minutes of talk time
remain (~15% charge), a warning tone sounds and the
"Battery low" message repeats at regular intervals on the display. In
this condition, your device conserves its remaining battery power, by
dimming the backlight.
When the battery level becomes too low, the device automatically
turns off.
The on-screen battery charge is represented (by default) as a
colored battery icon. You can also choose to display a percentage
value. Having a percentage value on-screen can provide a better
idea of the remaining charge on the battery.
Press and then tap Settings My device tab
Display Show battery percentage.
For more information, refer to "Display Settings" on page 330.
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