37
Troubles
Possible Causes
Solutions
Out of GSM service range.
Weak signal.
Contact the network
provider to check
service range.
Move to areas with
strong signal.
Unable to call
Call restriction function is on.
Fixed dial is on.
Cancel call restriction
function.
Cancel Fixed dial.
PIN error
Wrongly input PIN code for three times.
Contact the network
provider.
Unable to
charge
Battery or charger broken.
Change battery or
charger.
Charge in environment with temperature
lower than -10 or higher than 45 .
Change environment.
Bad contact.
Check if connected
properly.