How to trace radio interface events without root (Android)?

Question

Android

Friends, It is
necessary to trace events from the radio interface - receive AT commands, etc. There are two devices: OS Android 4.0.3, OS Android 2.3.4.
Whether who faced similar? Is there a way to get the log using the Android SDK?

Answer 1

As far as I know, without privilege escalation to root, this is not possible.
But even with the necessary privileges, it is not so easy to intercept AT commands directly.
The interface between the baseband and the kernel in Android devices is proprietary and different everywhere (depending on the hardware). Usermod RIL in android is just a wrapper over this kitchen. In general, you will need to parse the proprietary baseband protocol packages.

Answer 2

ntkt,
but how to get access to such an interface?
I think that since all Android devices are released with a Qualcomm chip, then the proprietary protocol should not be very different. Am I wrong?
Do I understand correctly that by baseband you mean a radio module, which is probably a combination of processor hardware (Qualcomm) and a set of commands for implementing interaction with GSM, 3G, LTE base stations?