I want to buy iphone4s with a credit card. Mine is the Spring and Autumn Dragon Card of CCB, with a quota of only 4,000. It's only been four months, and the quota cannot be raised. Can I be myself? ... Theoretically, it is possible. Limit refers to the maximum amount of overdraft consumption, that is, the maximum amount that the bank allows you to borrow. What is deposited and then consumed does not belong to overdraft category, but belongs to consumption. However, it seems that there will be a certain handling fee for using the money saved. You'd better consult the customer telephone number of the bank.