How To Block Spam Calls on Airtel, Vodafone-Idea, Reliance Jio and other networks

Telemarketing, spam, and scam calls have become very common these days. Most of the time we all face such calls like this!.

Method 1: Using SMS

1. Open the 'Messaging app' on your Mobile. 
2. Create a new message 
3. Type START 0 (all in caps letter) 
4. Send the message to 1909

Method 2: Using call

1. Open the dialer of your mobile. 
2. Dial 1909 and make a Call 
3. Follow the instruction to activate the DND  (Do Not Disturb) Services.