It has couple cases to have this happening .
1, Module reboot itself .
Registration process would consume some power , if power supply is not enough . module will power off / On periodically . In this case pls check VBAT pin of BG96 module if there is voltage drop .
2, AT+COPS=? was used to scan the network , in this case module will increase tx power to talk with cells . If power supply is not enough , reboot would happen.
or early firmware of BG96 may have this bug with AT+COPS command . pls send the IMEI , then we can find what firmware it is .
3, Module was reboot by MCU , while some ERROR returns , MCU will reset the module . So pls check if there is ERROR happens after AT command .
4, There is another case , module it is in PSM power saving mode . Pls check AT+CPSMS? if it is 0
Pierre , Where did you make the test ?
BG96 is CatM1 module , not regular LTE .
Is rebooting issue still happen ? or just Not happen without SIM .
The firmware tracking by above IMEI , it is MP version , should be fine . Pls help to check
ATI
AT+CPIN?
AT+CFUN?
AT+QCFG=“NWSCANMODE”
AT+QCFG=“IOTOPMODE”
AT+QCFG=“BAND”
Rebooting loop happens when the tracker can’t find the network, in a low signal environment.
Do you think the provided antenna is not good enough? Can I use a better antenna maybe? my phone can find the network in the low signal environment (2/4 bars) but not the tracker.
Did module register network ? Checking by command AT+COPS?
You could manage to force module to register CATM to check the situation via command
AT+QCFG=“NWSCANMODE”,3