Recommended USB LTE/4G modem for STM32MP2

[GuillaumeHupi]

Hello, 

We recently bought an STM32MP257f-dk board. We are running OpenSTLinux on it. We would like to connect a modem to communicate with the board via 4G. We're thinking of using a USB modem.
Do you have a list of recommended modems or modems natively compatible with OpenSTLinux? Or are there any specific features to look for? If Linux drivers exist for a modem, will it be easily compatible with OpenSTLinux?

Thank you

Guillaume