No GPS
A more open view of the sky is recommended to make sure the device can
receive the GPS signal normally.
No reply to SMS
command
Password wrong or the format is wrong.
No reply to calling & No
alarm message
Authorized / admin phone number is incorrect or has not setup
SMS position OK, cannot
use the APP and web
platform
Pls check if APN is correctly set. And pls find out the correct APN content of
the SIM card. (Pls refer to 6.3 setting.)
Platform position is
difference from the actual
position.
No uploading position time or no GPS signal: call the device phone number and
receive the position message. If it shows like Pic 2, it means no GPS signal. The
position is the last GPS positioning location; If it shows like Pic 1, it means the
device doesn’t reach the uploading time.