Have you ever been in a situation where you are lost injured or in need to make a flash call but you don't have credit then this post is for you
Normally you will need card to make calls and if you have 0.00kb balance you can't make flash calls which is bad because the need for flash calls must be free and essential this is an old stuff but I know most people don't know about it so I decided to post it to all fredili fans that are using airtel so that they can enjoy free flash calls in case of emergencyWith this method you can send unlimited flash calls with 0.00kb in case of emergency 

Requirements for airtel 0.00kb flash calls

 An airtel sim with 0.00kb
The person number you want to call
Step on how to set up airtel 0.00kb flash calls
First go to your dialerAnd type the phone number of the person you want to callSecond put **in front of the number
For example you want to call 08091127865You will put it as **08091127865
Then call the receiver will receive the flash call and your call will go with 0.00kb balance
This method have existed for years so it can't get blocked feel free to enjoy unlimited flash calls with 0.00kb on airtel