Arduino MKR NB Won't Connect

Development Tools Cloud IoT
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Arduino MKR NB 1500 will not show up as online in the Arduino Cloud even though my SIM card handler (Hologram) says it is connected to the internet and operating. Here is what I have tried:

  • I have tried using the tutorial LED code and my own code
  • Read dozens of forum articles
  • Contacted Arduino support only for them to stop responding
  • I was able to use the same code, Hologram SIM, and NimbeLink antenna on an old GSM I had. This worked and showed up as online on the Cloud
  • Firmware is outdated (even though these were just purchased) and is L0.0.00.00.05.06,A.02.01
  • Modem test succeeded in the desktop IDE
  • GPRS test succeeded in the desktop IDE
  • NBScanNetwork gave a strength of 15 in the desktop IDE
  • APN was set to hologram and everything else is left blank

I don't know what is going wrong! Please help

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Hi @saroth2 does Hologram provite only NB-IoT access or also LTE-M? AFAIK NB-IoT do not support TCP so it is not possible to connect to ArduinoCloud using NB-IoT you should use LTE-M and configure the MKRNB modem accordingly.

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Thanks for responding! My support request for Arduino came back this morning with instructions and files on how to update the uBlox firmware and that is what ultimately made it show up online!

Switching it to LTE only did make it work faster though once the firmware was updated!

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