1. The balance of the wallet default payment application is insufficient. Please confirm whether your wallet application is set as the default payment application, and check whether the wallet balance is enough to pay for the air ticket.
2. The version of mobile phone system is too low. The minimum system version required for Apple NFC to brush the subway is iOS 1 1. If the version of your mobile phone system is too low, it will lead to card swiping failure.
3. Poor induction. If the sensing posture is incorrect, resulting in poor sensing, the card may be displayed without deduction.