Useful Codes For Airtel 2012: 1) Send MRP FULLTT to 51619 for available full talk-time offers... 2) Send MRP TRF to 51619 for available tariff offers... 3) Send MRP SMS to 51619 for available sms packs... 4) Send MRP GPRS to 51619 for available gprs packs... 6) Send 3G to 121 for activating 3g or change 3g data plan... 7) Send START to 121/1210 to start any service... 8) Send STOP to 121/1210 to stop any service... 9) Dial *555# for daily and monthly sms packs... 10) Dial *222# for special five offers... 11) Dial *141# for airtel gift service... 12) Dial *325# for facebook fontwish service 13) Dial *121# for my airtel my offers 14) Send FUN to 54321 to activate airtel live (not working on new sims now)... Airtel Latest working free proxy trick: 15) Send LIVE to 52567 for airtel live settings... 16) Dial *123*7# or *123*10# for checking gprs data balance 17) Dial *125*5# for daily sms count... 18) Dial *123# for balance n validity... 19) Dial *567# for mobile office activation n deactivation...