Samsung SGH-I257ZKAATT - Manual (Page 34)

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Battery charge level. Icon shown is fully charged.
The battery is charging. Also displays battery
charge level.
Battery Power Low – Shows your current battery
only has between 15 and 28 percent power
remaining.
Battery Power Very Low – Shows your current
battery only has between 5 and 15 percent
power remaining.
Device Power Critical – Shows your current
battery only has less than 5 percent power
remaining and will immediately shutdown.
Your connection to an EDGE network is active.
Your phone is communicating with the EDGE
network.
Your connection to a UTMS, HSDPA, HSPA, or
HSPA+ network is active.
Your phone is communicating with the UTMS,
HSDPA, HSPA, or HSPA+ network.
Your connection to a 4G LTE network is active.
Your phone is communicating with the 4G LTE
network.
Your phone is downloading or has downloaded a
file. It will blink green when it is installing.
An outbound file transfer is in progress.
A Play Store download has completed.
Updates are available for download.
The phone is connected to a computer via a
supported USB cable connection.
The phone is tethered via a supported USB cable
connection.