Signal strength
The smartphone is connected to a wireless network.
When all four bars are shown, the wireless signal reception
is good. If the signal is weak, you can try to improve the
reception by moving the smartphone slightly or by using it
in the handsfree mode.
The smartphone is switched on, but it is outside
network coverage.
The phone functions of the smartphone are switched
off. You cannot make or receive calls, and you cannot
receive messages with any of the communications
applications (SMS, data, or e-mail).