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A comment on UPI: India's Unified Payments Interface. Parent comment

Re:UPI: India's Unified Payments Interface by captn3m0 on Sunday August 09, 2020 @03:48AM (#24098057)
> be prepared for transaction failures at best to getting locked out of the UPI apps at worst

Can you clarify on this? I’ve made transactions with UPI over in-flight Wi-Fi and no cellular coverage. The entire protocol does not require cellular/SMS coverage beyond the initial setup. Unless your specific PSP is doing some risk checks and signing you out, I don’t see why this would happen. The SIM-bindings are supposed to be persistent in nature.

Maybe your PSP is over-eager and you should try switching?

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Re:UPI: India's Unified Payments Interface by Abishek_Muthian on Sunday August 09, 2020 @05:27AM (#24098385)
> I’ve made transactions with UPI over in-flight Wi-Fi and no cellular coverage

Not sure whether aeroplane mode interrupts app's ability to fetch unique hardware ID like(IMEI, MEID, ESN, IMSI) but I've had such troubles multiple times, but as I said my phone is always on Aeroplane mode.

>Maybe your PSP is over-eager and you should try switching?

Could be. But the choice of apps according to me range from, less trustworthy to totally not-trustworthy and so I'm out of luck there as well. Nowadays, I just enable cellular services for few minutes, recharge that damn thing, before UPI transactions.

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