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20.3 Troubleshooting
In case of any anomaly during the operation of mobile phone, please refer to the following table to solve
the failures. If the failures cannot solved, please get contact with the dealer or service provider.
FAQ
Causes
Solutions
The network service provider does not
provide the service or you have not applied
for the service
Please contact with your network service
provider to ask how to apply and use the
service
It cannot connect
to Internet when
using the wireless
Internet service
You have not set it correctly
Please refer to the introduction of wireless
Internet service
SIM Card is damaged
Contact with your network service provider
SIM Card is not loaded correctly
Examine the SIM Card
SIM Card fault
SIM Card metal surface is dirty
Wipe with clean cloth
Radio wave cannot be effectively transmitted
when the mobile phone is used in the place
with poor receiving effect, like high-rise or
basement
Make or answer calls in place with sound
signals
Poor reception
Use the mobile phone during the call
intensive period with busy services
Never use the mobile phone during busy
hours
Startup failure
Battery power runs out
Replace with new battery
Failure to make
calls
Call barring feature is enabled
Cancel the call barring feature
SIM Card is null and void
Contact with your network service provider
Out of the GSM service zone
Move to the service zone of network
service provider
Failure to connect
to Internet
Signals are weak
Try in the place with stronger signals
Inconformity of voltage and the nominal
charger voltage
Please apply the voltage in compliance
with the nominal charger voltage
Non-standard charger is used
Please use the charger specially designed
for this mobile phone
Failure to charge
Poor contact
Examine if the plug is connected well