I don't have a smart card I want to get a new one, but the SMS verification code shows that the balance is insufficient. What happened?

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If you find that the balance in the card is insufficient in advance, please deposit the money into the card or credit card before the due repayment date of 17. If the balance in your one-card card is sufficient and it is repaid to your credit card when our bank deducts money, it may lead to repeated repayment. But don't worry, this repayment will still offset your subsequent consumption.

In the past, when citizens swiped their mobile phone cards, they needed to manually recharge them in advance before they could use the balance to take the bus. They can't take the bus when the balance is insufficient. But now, a card that can be recharged automatically has come.