[Problem] RTU5034 (2G) fails to register the signal
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[Problem] RTU5034 (2G) fails to register the signal
   [Problem]: After using the RTU5034 (2G) for a period of time, the foreign customer suddenly fails to register the signal.
   [Possible causes and solutions]:
  (1) Please confirm whether the local 2G network is still available;
  (2) Please confirm whether there is any money in the SIM card installed in the device;
  (3) Please check if the card slot of the device is in poor contact and the SIM card is loose.