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[blissful knoll]

Hi

a) card that was attached to wallet gets expired and customer updates date and cvv in wallet?
In some cases there'll be automatic card updates,
https://stripe.com/docs/saving-cards#automatic-card-updates
b) customer updates billing address in wallet?
No. You need to handle updating the billing address by your integration (e.g. give your customers the ability to update their billing cycle)

[analog solstice]

Ok thanks for clarification, few more questions:
if card itself does not support automatic updates but customer manually updated cvv in wallet will this change be picked from wallet?
Does stripe communicate with wallets when doing off session payments, or wallets just provide card details once and stripe use that details just as any other card?

[blissful knoll]

if card itself does not support automatic updates but customer manually updated cvv in wallet will this change be picked from wallet?
No, not automatically.

Does stripe communicate with wallets when doing off session payments, or wallets just provide card details once and stripe use that details just as any other card?
No it doesn't, the only possible way for doing automatic card details is via the bank network