Is it possible to check via ADB if the phone is connected to a cellular network?
I had a look at ConnectivityManager, but it is for android application development.
Certainly using the command from shell :
or directly from adb :
adb shell dumpsys telephony.registry
The values of mServiceState or mDataConnectionState will help you. I tried in Plane mode mServiceState=3 / mDataConnectionState=0 and connected to the cellular network : mServiceState=0 / mDataConnectionState=2
PS: I'm using an Android 4.4 phone.