ignals are obstructed.
or instance, radio waves
cannot be effectively
transmitted nearby a high
Poor
building or in a basement.
received
signal
uality
ine congestions occur
when you use the mobile
phone in high-traffic
hours
The
mobile
phone
The battery energy is
cannot be
exhausted.
powered
on
alls
cannot be
all barring is activated
dialed
The I
The
mobile
phone
The mobile phone is not
cannot
in a service area of the
connect
the
network
The signal is weak
The charging voltage
does not match the
The
voltage range indicated
battery
on the charger
cannot be
charged
n improper charger is
used
card is invalid
network
- -
ove to a place where
signals can be effectively
transmitted
void using the mobile
phone in high-traffic
hours
harge the battery
ancel call barring
ontact your network
service provider
ove to the network
operator s service area
ove to a place where
the signal uality is high
nsure the charging
voltage matches the
voltage range indicated
on the charger
se the charger specially
designed for the mobile
phone