Thank you for your question.
We can only set an event to send an SMS message to a specific number when the SIM card is removed.
In order to set it up we can set I/O element called "UMTS/LTE Cell ID" to high/panic priority, set operand "on change" and set an authorized number to send an SMS whenever the value will change. You can also send an SMS command:
" setparam 52570:2;52571:5;6000:[your phone number];7581:1;8581:[SMS message to be sent]" (keep in mind the two spaces at the start of the command)
Please refer to our Wiki page on how to setup Low/High priority events https://wiki.teltonika-gps.com/view/FMB130_I/O_settings