There is no necessary connection between the amount of savings card deposits and the handling of credit cards. The bank has no hard and fast requirement on the deposit amount of the applicant who applies for a credit card. Even if the deposit amount of the savings card is 0, he can apply for a credit card.
To apply for a credit card, the applicant only needs to be at least 18 years old, have a valid original ID card, have a stable income and sufficient repayment ability, and have a good credit record. The rest are not hard and fast.