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15
Troubleshooting
Frequently Asked Questions
Fault
Cause
Solution
The UIM/SIM card is
damaged.
Contact your network service
provider
The UIM/SIM card is not
in position.
Check the UIM/SIM card
UIM/SIM card
error
The metal face of the
UIM/SIM card is polluted.
Clean the UIM/SIM card with a
clean cloth
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
Poor received
signal quality
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
Call barring is activated
Cancel call barring