AWS intermittently dropping out while network connected.

[HoovinSchoovin]

Hello, 

We are currently experiencing some unusual behaviour on our feather board (circuit dojo, nRF9160 chip) which we are seeking advice on. 

Whats happening:

Device will connect to network and connect to AWS. In poor cell reception areas device will infrequently get a first message (ack cmd or custom command). If it does get a first message, device will stop receiving within a couple minutes and not reconnect. Moving to a better area device doesn't reconnect. Only resetting the device works. There is no logging on board to explain what is happening (nothing comes up). 

We are using AWS IoT core using mqtt messaging. 

We have added a trace on a DK9151 for testing the firmware network connectivity - is there a way we could get a trace on the feather?trace-2025-03-10T21-47-04.693Z.mtrace

Any suggestions on how to debug would be greatly appreciated!

[Øyvind]

Hello there, 

What SIM are you using in your devices?  Looking at the modem trace provided we can see that device is first rejected by the network.

It then is seemingly able to reconnect to the network. 

Are you able to provide application logs from the your devices as well? 

is there a way we could get a trace on the feather?

I'm not familiar with the nRF9160 Feather and its connections but I would think that there are instructions on the web page of the device? Our nRF Connect SDK includes some documentation on Modem Traces and more on the Modem Trace modules that you can include while building. What version of the SDK are you working with? 

currently experiencing some unusual behaviour on our feather board (circuit dojo, nRF9160 chip)

Where exactly is the device located? Is the modem trace from the nRF9151DK captured in the same location? 

Kind regards,
Øyvind