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Troubleshooting
Frequently Asked Questions
Fault
Cause
Solution
UIM/SIM card
error
The UIM/SIM card is damaged.
Contact your network service provider
The UIM/SIM card is not in position.
Check the UIM/SIM card
The metal face of the UIM/SIM card is
polluted.
Clean the UIM/SIM card with a clean cloth
Poor received
signal quality
Signals are obstructed. For instance, radio
waves cannot be effectively transmitted
nearby a high building or in a basement.
Move to a place where signals can be
effectively transmitted
Line congestions occur when you use the
mobile phone in high-traffic hours
Avoid using the mobile phone in high-traffic
hours
The mobile phone
cannot be
powered on
The battery energy is exhausted.
Charge the battery
Calls cannot be
dialed
Call barring is activated
Cancel call barring
The mobile phone
cannot connect
the network
The UIM card is invalid
Contact your network service provider
The mobile phone is not in a service area of
the CDMA network
Move to the network operator's service area
The signal is weak
Move to a place where the signal quality is
high
The battery
cannot be charged
The charging voltage does not match the
voltage range indicated on the charger
Ensure the charging voltage matches the
voltage range indicated on the charger
An improper charger is used
Use the charger specially designed for the
mobile phone
Poor contact
Ensure the charger plug is in good contact with
the mobile phone