Free 3G Airtel gprs trick get 4GB internet June 2012 | airtel Gprs trick 1
send 3G to 121
Step 2 : you will receive message from airtel and your 3G will activated soon.
Step 3 : you got message about various 3G options
Step 4 : Choose '1' for 3G data plans
Step 5 :Next choose '12' for 2.5 GB or '13' for 4 Gb
Step 6 : any one of is working for you..
Note: If you have any query plz comment belows.