Icemobile APOLLO User Manual page 36

The mobile
phone is not
in a service
area of the
GSM network
The signal is
weak
The charging
voltage does
not match the
voltage range
indicated on
The battery
the charger
cannot be
An improper
charged
charger is
used
Poor contact
Move to the network operator's service area
Move to a place where the signal quality is high
Ensure the charging voltage matches the voltage range
indicated on the charger
Use the charger specially designed for the mobile phone
Ensure the charger plug is in good contact with the mobile
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phone