After I changed remotely the cellular service from LTE to 3G I cannot anylonger reach the router through SMS. I was dumb and changed the cellular service before I checked that 3G is not anylonger available in the area.
Is there any other way I can reach the router? I read somewhere that the router should automatically go to auto if it cannot connect to a service i.e., 3G.
Unfortunately, if the auto fallback is not triggered (as seems to be the case), restoring connectivity without physical intervention can be challenging. The available options would include:
Physical Intervention: Performing a factory reset on-site to revert the router to its default settings and allow it to reconnect automatically to the available network.
Connection to CLI (if accessible): If it’s possible to connect to the router’s CLI via another interface (e.g., LAN), you can execute the following command to enable automatic network mode selection:
gsmctl -A 'AT+QCFG="nwscanmode",0,1'
This command sets the device to automatically search for and connect to the available network mode.