I’ve not heard any customer concerns of the issue coming back up for any customer on v1.3.1-rc.1
I encourage you to run https://github.com/rickkas7/boron-clouddebug on your device to capture debug logs so that we can see what may be causing issues.
It’s unclear to me why your units are disconnecting so frequently. Feel free to direct message me your device IDs and I can investigate on our client side why they may be disconnecting so frequently.
Boron 2G/3G and Boron LTE make use of different operators, technologies, and towers. It could be a coverage issue or it could be something else. I can potentially provide more insight once I am able to view cloud side logs for these devices.