Samsung Galaxy S4 User Manual page 36

Displays when the Wi-Fi calling feature is active.
Minutes used while connected to the Wi-Fi network
count against available rate plan minutes.
Displays when the Wi-Fi calling feature is active and
you are using it with within your current active call.
Displays when there is an error in the use or 911
registration of the Wi-Fi Calling feature.
Displays when you are currently in Emergency
calling mode. You must exit this mode to resume
normal calling function.
Displays in the notifications window when
a new T-Mobile account information is available.
Displays in the notifications window when there are
too many on-screen notification icons to display.
Tap to show more notifications.
Tap to select a text input method.
Displays in the notifications window when a
song is currently playing within the Music
application.
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Displays in the notifications window when a song is
currently playing within the Play Music application.
Displays when your device's GPS is on and
communicating.
Displays when the external SD card (internal
microSD) has been disconnected (unmounted)
from the phone and is now ready for either removal
or formatting.
Displays when the External SD card is being
prepared for mounting to the device. This is
required for communication with the External SD
card.
Displays when the microSD card has been
improperly or unexpectedly removed.
Displays when storage within either the internal
location or the external SD card has reached its
capacity. It is recommended you either move
files off or delete them to make additional room.
Displays when the Power saving alert notification
has been activated. You are then prompted to view
your current battery level.