Here are the Airtel USSD codes with USSD details. You can use these Airtel codes to find out information about your Airtel number's services.

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