Operation Manual

Sync 5c User Manual | Sync 5c Manual de
Usuario
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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 Solution
SIM card error
The SIM card is
damaged.
Contact your network service provider
The SIM card is not
in position.
Check the SIM card
The metal face of the
SIM card is polluted.
Clean the 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 SIM card is
invalid
Contact your network service provider