Trevi REVERSE 5.5 Mode D'emploi page 54

14 FAQS and solutions
If you have any questions about the phone, please fi nd the solutions from the table below.
FAQs
Poor reception
Echoes or noises
Shorter standby time
Failed to turn on your phone
SIM card error
Failed to connect to the network
Causes
When you use your phone at poor
reception areas, for example, near
high rise buildings or base rooms,
the radio wave cannot be transmitted
effectively.
When you use your phone at
network traffi c congestion, such
as working time and off-duty time,
the congestion can result in poor
reception.
This is related to the distance to base
station in question.
The trunk line of network is in bad
condition. It is a regional problem.
In some areas, the call lines are in
bad condition.
The standby time is relevant to
network settings.
Replace the batteries
When no signals are received, your
phone will continue searching for
base stations, thus consuming a
large amount of battery power and
reducing standby time.
The battery power is used up.
The SIM card is damaged.
The SIM card is not properly installed. Ensure the SIM card is properly
The metallic face of the SIM card is
contaminated.
The SIM card is invalid.
Beyond the GSM coverage.
The signal is feeble.
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Solutions
Avoid this as far as you can.
Avoid this as far as you can.
You may ask the network service
provider to provide service coverage
map.
Hang off the call and dial again.
Choose another better line.
In poor reception areas, turn off
your phone temporarily.
Change with a new battery.
Use your phone at strong signal
areas or Turn off the phone
temporarily.
Check the battery power level or
charge the battery.
Contact your network service
provider.
installed.
Wipe the face with a clean cloth.
Contact your network service
provider.
Consult the network service
provider for service areas.
Retry at a stronger signal area.