| USSD Code | Functions |
| 121 | Airtel Customer Care Number |
| 198 | Airtel Complaint Number |
| *123# | Airtel Balance Check |
| *123*10# or *123*# | Check for Free 2G Data Balance |
| *123*11# | Check for 3G Data Balance |
| *121*8# | Check for Airtel 4G Balance |
| *123*197# | Airtel Night Data Balance |
| *123*2# or *555# | Check for Local SMS Balance |
| 1909 | DND Activation/Deactivation |
| *141*10# or 52141 | Airtel Loan Number |
| *121# | My Airtel, My Offer |
| *121*4# | Airtel Value Added Services |
| *121*7# | To Check Last 5 Transactions and also Value Added Services. |
| *123*1# | Check for Airtel to Airtel Minutes Balance |
| *123*6# | Local Airtel to Airtel Night Minutes Balance |
| *123*7# | Check for Free Local, STD SMS Balance |
| *123*8# | Check for Free STD Minutes Balance |
| *141# | Airtel Talk time Gift Service [Share or Ask Talk time ] |
| SMS 3G to 121 | Airtel 3G activation ussd code |
| *222# | Special 5 Offers |
| *321# | Airtel Live Services |
| *325# | Free Facebook Access [Rs. 1 per day ] |
| *515# | Twitter Service |
| *566# | Airtel Special Offers and Rewards |
| *567# | GPRS(Activation/Deactivation) |
| *678# | Hello Tunes Menu |
| *888# | Missed Call Alert |
| *777# | Local National SMS Packs |
| *282# | Know Your own Airtel number |
| *141*10# | Airtel loan code |
| SMS PORT to 1909 | Mobile number portability |
| SMS START to 121 | Start any service |
| SMS STOP to 121 | Stop any service |
| SMS Data USE to 121 | Check 2G/3G balance |
| SMS UNB to 121 | Check unbilled amount |
| SMS OT to 121 | Outstanding amount |
| SMS BP to 121 | Current bill plan |
| SMS BILL to 121 | Billsummary |
| SMS PAY to 121 | Last 3 bill payment details |
| 543217 | Contests |
| Prepaid Network USSD Codes | |
| Airtel USSD Codes | Aircel USSD Codes |
| BSNL USSD Codes | Idea USSD Codes |
| Vodafone USSD Codes | Tata Docomo USSD Codes |
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