Samsung Galaxy S4 User Manual page 43

Device Power Critical: Battery has very little power
remaining. Charge immediately.
GPS Location Active: One or more GPS location
services are active. (See "Location services" on
page 194.)
No SIM: No LTE SIM is installed.
Smart stay Active: Smart stay setting is ON. The
screen stays lighted while you look at it.
No Network: No wireless network is available.
3G connection: Phone is active on a 3G system.
4G LTE Connection: Phone is active on a 4G LTE
system.
Signal Strength: Current signal strength. The
greater the number of bars, the stronger the signal.
New Message: You have new message(s).
New Voicemail: You have new voicemail. A number
indicates the number of new messages.
New Email Message: You have new email.
Silent mode: All sounds except media and alarms
are silenced, and Vibrate is not active. (See
"Volume" on page 171.)
Vibrate: All sounds are silenced, and Vibrate is
active. See "Vibrations" on page 172.
SD Card Ready: A memory card scan is underway,
to prepare the card for use.
SD Card Removed: A memory card was un-installed.
Bluetooth Active: Bluetooth is turned on.
Bluetooth Connected: Your device is connected with
another Bluetooth device.
Wi-Fi Active: Wi-Fi is active, and connected to a Wi-
Fi network.
Understanding Your Phone 38