Query a phone call via ADB commands

Question

Is there a way to query a phone call status with ADB commands?

For instance, I want to see if a phone call is still active while in a phone call or if it is not there (has dropped)

Answer 1

You could use dumpsys command.

$ adb shell dumpsys telephony.registry

The field mCallState gives the call status:

$ adb shell dumpsys telephony.registry | grep "mCallState"

1. When in Idle mode:

   $ adb shell dumpsys telephony.registry | grep "mCallState"         
   mCallState=0
   

2. When call is connected:

   $ adb shell dumpsys telephony.registry | grep "mCallState"         
   mCallState=2
   

3. When an incoming call (Phone in ringing mode):

   $ adb shell dumpsys telephony.registry | grep "mCallState\|mCallIncomingNumber"
   mCallState=1
   mCallIncomingNumber=+9191XXXXXXXX
   

More information here:

1. Android TelephonyManager.
2. TelephonyManager Call States.

Tested on Android v4.4.4

Misc:
You can get a lot of information using dumpsys.
To see what parameters dumpsys support use adb shell dumpsys | grep "DUMP OF SERVICE".