Hello people, how are you? Anyway, I could not find anywhere on the internet the answer to my question. I have a Huawei E303C Modem connected to a raspberry pi 3, it is connecting in 2G / 3G / 4G and browsing normally, the question is, I want a command to be able to write to the raspberry terminal to be able to know which SIGN it is picking up, if it is 2G (EDGE), 3G (HSPA) or 4G (LTE), I will use several raspberries in parallel with these modens, and I need to keep informed of what kind of signal each is connecting. I know to send AT commands through the serial terminal, but for my problem it is impractical, since I have a script that collects data from all raspberrys and can not access via serial each. Thank you very much in advance!