Originally Posted by
GoraDesi
Also, Airtel seems to no longer accept "international" credit cards (like AMEX) for payment on pre-paid SIM cards so I am not sure how to recharge the SIM each month apart from asking a local friend to use their UPI to do so.
https://www.amazon.in/hfc/mobileRecharge
Usually accepts my amazon.com account Visa/MC with 2FA verification via PayU (also known as PayUp). However, it does not always work. AmEx always works.
Generally easier to pay for a year at a time.