We are running into an issue of stability with our LTE connection. Our nRF9160 makes a call every 5 minutes to our backend. On start-up, the device connects and starts making these calls. After some time (90 minutes to 3 days) we stop seeing the communication to our backend. Once we power cycle the device, we start to see the calls coming in again. The 9160 application has the watchdog enabled, and is not hanging as I'm still seeing heartbeat print outs on RTT viewer.
I'm getting the system setup to collect the modem trace files with nRF Connect Trace Collector. Are there any additional debug outputs I should be collecting to help diagnose this network connection issue?
We're using:
NVS v2.1.2
MFW v1.3.3
Zephyr 3.1.99
On ATT network
