Using a RUT24006E000 to connect to network through a SIM card wich allow to connect to multiple network providers using a private APN.
I have successfully configured a RUT240. So I bought a few more RUT240.
And when I configure them the same way I did for the first one, it doesn't work.
They never register any network and keep switching from a network to an other, even when I force manually one operator in the modem.
I tried the SIM cards in some other modem (not Teltonika) and using the same Mobile configuration (private APN, CHAP, login/pass), it connects great.
Funny fact, all my RUT240 keep trying to connect to LTE only, even if I specify 2G only or 3G only in mobile configuration.
Firmware version : RUT2XX_R_00.01.12.3
Product code : RUT24006XXXX