If there is no available balance in the credit card, you cannot continue to overdraw. Please note that the credit card overdraft cannot exceed the credit card limit. You can wait until the credit card limit is restored before you can buy a mobile phone, or apply to the card issuer for a temporary increase in the limit to buy a mobile phone.

credit card limit:

credit card limit, also known as credit card credit card limit, refers to the maximum amount of credit card that can be used, which includes credit card limit (that is, the maximum credit card overdraft limit) and the amount deposited in the credit card.

the amount of any credit card depends on the effective income provided by the individual in the application process and the guaranteed value of the assets. The credit limit of a credit card is positively related to the income and secured assets of the applicant. The higher the income and secured assets, the higher the credit limit. Therefore, the applicant must provide proof of income and statement of asset guarantee. Asset guarantee includes fixed assets such as real estate and automobiles, as well as current assets such as savings and bonds.