You can check the status(Available/ On call) and the caller number , if your friend (or the person whom you want to check the call status ) also has Peepo app installed .
Install App
Request Connection
Once the request is accepted you can check the number the person is speaking to when is on call .
Have fun and be Smart .
Call Status : Is available for call or busy over call
Mobile's Battery Status - Low Battery / Charging
Mobile's Sound Profile - Slilent / Vibration / Ringing