Samsung Galaxy Tab A with S Pen (2016, 10.1") 用户手册

Basics

26

Indicator icons appear on the status bar at the top of the screen. The icons listed in the table 
below are most common.

The status bar may not appear at the top of the screen in some apps. To display the 
status bar, drag down from the top of the screen.

Meaning
No signal
Signal strength
Roaming (outside of normal service area)
GPRS network connected
EDGE network connected
UMTS network connected
HSDPA network connected
HSPA+ network connected

 / 

LTE network connected
Wi-Fi connected
Bluetooth feature activated
GPS activated
Call in progress
Missed call