TekConnec Inc AA777S Benutzerhandbuch
24
The mobile
phone
cannot
connect the
network
The SIM card is
invalid
Contact your network
service provider
The mobile phone is
not in a service area of
the GSM 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 matches the
voltage range
indicated on
thecharger
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