Copy out the number you want to call.
On your dial-pad, Paste or type the number there.
Add “**” at the beginning of the number. (Eg) **09033474141
Call the number, it will disconnect at your own end and It will ring once at the receivers end.
That’s All, You have flashed the number without having any credit on your phone.
You can repeat it to keep flashing the person. You can also use the above steps to flash another network number from your Airtel line.
This trick currently works with Airtel only and it doesn’t have limit. You can do it as many times as you like.
We are still working to make it unlimited calls