Communication issue to display using cellular modem, SIM card has malfuctioned

Potential Symptoms

  • Verizon website shows device as active, but not connected.
  • LED Lights on the modem show a solid green power, but also show flashing red for Signal and Network.
  • Able to access modem locally, but not showing a WAN Ip address in Ace Manager.
  • Ace Manager reports "No SIM or Unexpected SIM Status" on the Cellular screen.
  • Number of SIM's Present is 1, but APN Not found is reported on Cellular screen.


  • Product Family: Message Center
  • Product: GS6
  • Component: Sierra Wireless RV50 Modem
  • Control System:


  • SIM card is failing to authenticate/connect to the providers network.


  • Replace SIM Card.

KB ID: DD4162540

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