To ensure the normal use of the Sigma Card and the continuity of account settlement processes, the minimum balance requirement for the Sigma Card is explained as follows. Users are advised to read and understand these rules carefully before use.
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Minimum Balance Rule
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Each Sigma Card will be forced to retain 1U in its card balance as the guaranteed amount for card activation.
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The minimum balance cannot be withdrawn.
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Transactions may fail if the card balance falls below 1U. It is recommended to top up your balance promptly.
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Monthly Fee Mechanism
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Monthly Fee Amount: 1U/month
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Deduction Date: Automatically deducted on the 1st of each month
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Deduction Details:
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If the card balance is greater than 1U and sufficient to cover the full monthly fee, the fee will be deducted directly from the card balance.
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If the card balance is greater than 1U but insufficient to cover the full monthly fee, the system will first deduct the available amount from the card balance, and the remaining portion will be deducted from the card account balance.
Example: If the card balance is1.5U, the system will first deduct0.5Ufrom the card balance, then deduct0.5Ufrom the card account balance. -
If the card balance equals 1U (only the reserved minimum), the entire monthly fee will be deducted from the card account balance.
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If the card account balance is insufficient to cover the monthly fee, the system will record the unpaid amount, and the balance will display as negative. Please top up promptly.
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If the monthly fee cannot be successfully deducted for three consecutive months, the card will be forcibly canceled.
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Balance Refund Mechanism Upon Card Cancellation
If a user applies to cancel the Sigma Card, the reserved 1U in the card will be fully refunded to the user's card account balance after the card is successfully canceled.
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This amount will not be deducted, frozen, or incur any other fees.
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The refund will follow the original source of the user's funds, ensuring security and traceability.