How do I catch the logs of a 4G module on the Android system?

Catch the logs of the 4G module by typing the following command in Windows’s CMD tool when the system is booted.

$ adb shell

$ logcat –b radio –v time –f <filename> &

The character “&” makes the “logcat” process run in the background.

fetch the log file by using following command,

$ adb pull <filename> <local directory>