In order to apply for a credit card, you must be at least the legal age in the state of your residence, your annual salary must be at least $12,000 (for an unsecured card), you must have a telephone in your residence and you must reside in the United States and have a valid social security number. Credit approval will be determined upon review of a current credit bureau report and other information bearing on your creditworthiness; this includes an evaluation of your ability to pay based on factors such as your income and/or assets and your debts and obligations.