doppio DP400 Manuale d'uso - Pagina 15
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If anything unusual occurs while using your Smart Phone, please refer to the following
table.
Frequently
Occurring
Problems
Poor
Using the Smart Phone in an area
reception
with poor reception such as near
tall buildings or in a basement
where radio waves cannot be
transmitted.
the network is busy, such as during
rush hour, when the lines are full
making it impossible to get through.
Related to the distance from the
base station built by the network.
Echo or noise
Caused by poor network relay, a
regional problem.
Some calling regions have poor
lines.
Shortening of
Standby time is related to the
the
standby
network system.
time
Batteries need to be replaced
When you cannot get a signal, the
phone will continue to transmit in
order to find a base station, thereby
expending
electricity will cause the standby
time to decrease.
Unable to turn
The battery is empty.
on the phone
SIM
card
SIM card is damaged.
malfunction
SIM card is not properly inserted.
There is a dirty substance on the
metal surface of the SIM card.
Troubleshooting
Cause
Using the Smart Phone when
large
amounts
How to Fix
Try to avoid.
Try to avoid.
You can request that the
network
service
provide a service area plan.
Hang up and redial, if the relay
is changed then the line may be
better.
Please temporarily turn off your
Smart Phone, as you are
located in an area with poor
reception.
Replace the batteries
Please move to an area with a
strong signal or temporarily turn
off your Smart Phone.
of
Look at the remaining electricity
or recharge.
Contact your network service
provider.
Confirm SIM card is properly
inserted.
Use a clean cloth to wipe off the
metal contact point of the SIM
card.
provider
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