User manual

22. Common problems and solutions
If you encountered problems while operating your device, the following troubleshooting tips may help
resolve the issue. If the problem persists, please contact your dealer or service operator.
Common
problems
Reasons Solutions
Network service operator does not
provide such service, or you have
not subscribed to the service.
Consult network operator for
information about how to subscribe a
service.
Fails to connect
to network
using Internet
Explorer
Incorrect configuration of Internet
Explorer
Refer to Section. Getting
connected.
SIM card is warped or damaged. Consult your network operator.
SIM card is not properly installed. Check SIM card. Change to a new
one if necessary.
SIM card error
Metal surface of SIM card is
unclean.
Clean the metal surface with a clean
cloth or tissue.
Using your phone in places that
may result in a poor signal of your
phone, like surroundings of high
buildings, or in a basement where
radio waves become unreachable.
Receive calls in places where a good
signal is available.
Poor signals
Using phone during the period of
busy communication, which may
results in a channel jam and
inability of communicating.
Avoid being within such a situation or
similar.
Fail to power on Using an excessively low battery. Charge it, or replace it with a new
one.
Fail to make a
call
Call barring service enabled. Disable it in Settings > Phone
SIM card invalid Consult your network operator
Out of GSM service area Relocate your phone into service
area of network operator.
Fail to connect
to network
Poor signals
Relocate your phone to places with
strong signals, then try again.
The battery voltage in use is not in
the range specified by charger.
Use batteries with proper voltage
range.
Using a non-standard charger Use a charger designed for this type
of phone.
Fail to charge
Improperly connected to the main
power.
Check the connection in between.