I have potentially found a bit a strange bug relating to both RAK7240 and RAK7258 have similar issues.
RAK7240 running 1.0.2 and older (not tested on newest version however)
Another bug also listed below relating to RSSI reporting.
a) WiFi set as Access Point mode on the RAK7240 - e.g. broadcasting a WiFi allowing people onsite to take advantage of the SIM card as a hot-spot essentially while still allowing the Gateway to connect back to the internet.
b) LTE setup is all correct and proven to work, connected and working well with WiFi giving access to the laptop computer currently connected to broadcast WiFi from said RAK device.
When rebooting the Gateway, OR powering down/reconnecting at site I have found that the Gateway will refuse to use the LTE as primary backhaul even when logging into the online console and viewing its cellular status as OK.
This is issue goes away if I first remember to disconnect a Windows 10 laptop from the RAK gateways broadcast WiFi WHILE the gateway boots fully, if I wait a few minutes assuming the RAK gateway has fully booted, then turn on the computer WiFi again the LTE has connected and allowing the gateway to connect to the internet perfectly.
It seams there is a bug with the WiFI being used as backhaul instead of LTE - this would make sense in the case of the gateway connecting to existing router - but appears to use the Laptop in hopes of allowing internet access through its adapter - which is wrong for Access Point mode.
Be interesting to hear feedback of similar issues and have a resolution to it.
2nd Bug, visually the Cellular value readouts make no sense for the overview page:
Cellular (though disabled) reports as “RSSI: 25”, what exactly is this 25? is it -25dBm?, if it is negative it should show this for diagnostics as its not clear.