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4 Troubleshooting
If you find exceptions when operating the mobile phone, restore the factory settings and then refer to the following table
to solve the problem. If the problem persists, contact the distributor or service provider.
Fault
Cause
The SIM card is
damaged.
The SIM card is not
SIM card error
in position.
The metal face of the
SIM card is polluted.
Signals are
obstructed. For
instance, radio
waves cannot be
effectively
transmitted nearby a
Poor received
signal quality
high building or in a
basement.
Line congestions
occur when you use
the mobile phone in
high-traffic hours
The mobile
The battery energy is
phone cannot be
exhausted.
powered on
Calls cannot be
Call barring is
dialed
activated
The mobile
phone cannot
The SIM card is
connect the
invalid
network
Solution
Contact your network service provider
Check the SIM card
Clean the SIM card with a clean cloth
Move to a place where signals can be effectively transmitted
Avoid using the mobile phone in high-traffic hours
Charge the battery
Cancel call barring
Contact your network service provider
17
Sync 5c User Manual | Sync 5c Manual de
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