A few days back I shared a few BSNL message center number that when used let you send unlimited free SMS messages in India. Now here is another message center number but this time its Airtel that does the same thing.
For this, you have to create a new message center from your phone’s messaging options. Use this number +919810051905 as the message center number. Now I assume that you are on a Nokia mobile phone. Browse through your phone settings and find out packet data from connections. Now change the option for Packet data connection from when needed to when available and access point as Airtel Live. Save the settings.
Now onward send unlimited free SMS from your Airtel mobile phone. And when each time you send an SMS, remember to add a zero at the beginning of destination number.