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: A Personal Identification Number to authenticate your credit.

While Airtel India focuses on roaming packs, other branches like or Airtel Nigeria offer specific international bundles through USSD menus (e.g., dialing *146# or *789# ) that can be purchased using your main account balance. International Call Charges, ISD Calling Rates - Airtel airtel calling card buy online

: If you are abroad and need to recharge an Indian Airtel SIM for international calls, platforms like Ding , BOSS Revolution , and PhoneIndia allow you to send airtime or specific calling bundles from overseas. How Calling Cards Work : A Personal Identification Number to authenticate your

: A toll-free or local number to dial from your phone. How Calling Cards Work : A toll-free or

If you purchase a digital international calling card rather than a direct SIM top-up, you will generally receive: