Check your friend balance(Airtel)
Now, Check your Friend Airtel Account Balance for free. Just follow:
> Dial: 12161p1p(Airtel Number)p1p1p1234pp3
Eg: 12161p1p9955******p1p1234pp3
> Dial: 12161p1p(Airtel Number)p1p1p1234pp3
Eg: 12161p1p9955******p1p1234pp3