weak signal
Try again in a strong signal area
can not charge
Voltage is out of charging range
of charger.
Change to the proper voltage
Use non-standard charger
Use charger that come with the
package
Poor contact
Check if the plug is in.
Red LED is continuous dark
when charging
It is because the battery is used
up ,keep charging after about half
an hour, the LED will turn on
Can not check
address
information
SIM card can not support GPRS
functions
Please contact the sim card
operator to activate GPRS
Reply “no data, please try again”
all the time
Please contact with your
distributors
It is not a sos number
Please set the number as sos
number
Содержание GPS portable tracker
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