LTE CAT M1 connectivity with IOT hardware

We are using Hologram SIM card in USA(unit 2 Bentonville) with our own IOT hardware, Hardware consists of Quectel BG96 LTE CATM1/NB-IOT module. By default, the device has taken T-mobile 2G network.
How to get connected with LTE CAT M1 network, Is there any configuration to be made in SIM card or in the IOT device.

We have seen similar behavior with our BG96 modems. CAT-M1 is available, but it seems to like T-Mobile 2g the best.

You can use the following AT commands to configure what RAT and bands the modem will use:


See Quectel BG96 AT Command manual for details:

Thanks ndrake ,
If I force module to connect with LTE CAT M network, does it still can fall back to 2G if in some time LTE CAT M network is not available.
My requirement is My device when it is switched on it should take the LTE CAT M network, Only if there is no network connection to LTE CAT M then it should automatically should take 2G network.


No, if you use those settings to restrict it to CAT-M1 it won’t fallback to 2G.

Okay ndrake,
Many thanks