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If malfunctions occur during operation of your mobile phone, please
consult the following troubleshooting table:
Problem: Weak signal
Possible causes Solutions
If the mobile phone is used in
areas with a weak signal, such
as buildings or basements, the
radio waves cannot penetrate
properly and communication may
be disturbed.
Try to avoid this.
If the weak mobile phone is used
during peak hours with increased
call volumes, it may not be
possible to make calls due to
network congestion.
Try to avoid this.
Base stations may be too close
or too far away, which can cause
network disturbances.
Ask your mobile phone provider
for a map of the area.
Problem: Echo or noise
Possible causes Solutions
Caused by bad main line, regional
problem.
Hang up and call again.
Regional bad line. Maybe this time you‘ll get a
good main line.
Problem: Cannot boot up
Possible causes Solutions
Caused by bad main line,
regional problem.
Hang up and call again.
Problem: Shorter Standby Time
Possible causes Solutions
The standby time is related to the
network system settings.
Turn off the phone in an area
with poor reception.
The battery must be replaced. Please replace the battery.
Because the phone is constantly
searching for a base station, it
consumes a lot of battery power,
which reduces the standby time.
Please go to a place with a
strong signal or turn off the
phone.
Problem: SIM card error
Possible causes Solutions
SIM card is damaged. Contact the network provider.
SIM card not installed. Make sure the SIM card is
inserted.
Dirt on the SIM card metal
surface.
Brush the metal contacts of the
SIM card with a clean brush.
Problem: No calls possible
Possible causes Solutions
Call barring has been activated. Deactivate the call barring.
Call number restriction is
activated.
Deactivate the call number
restriction.
Problem: Cannot create a new phonebook entry
Possible causes Solutions
Phonebook memory is full. Delete part of the phonebook
memory.
Problem: Cannot charge
Possible causes Solutions
Damaged battery or charger. Battery or charger must be
replaced with a new one.
Charging in environments below
-10 °C or above 55 °C.
Provide a more moderate
temperature environment.
Bad contact. Check the plug connection for
correct contact.
Problem: PIN error
Possible causes Solutions
Incorrect PIN code entered three
times in succession.
Contact your network provider.
Problem: No connection to the network possible
Possible causes Solutions
SIM card is invalid. Contact your network provider.
Outside the GSM or 3G network
range.
Contact your network provider
for this area.
The signal is weak. Please go to a place with a
strong signal and try again.
Problem: Cannot perform a particular function
Possible causes Solutions
The network provider does not
support this feature or you have
not applied for it.
Contact your network provider.
19
13. Common Problems & Solutions
19


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