Your new AAdvantage MileUp Card will be ready to make purchases in just a few minutes no matter which method you use to activate it. Citibank does not have a certain time limit within which you need to activate your card, but it’s best to do it as soon as possible.
How to Activate an AAdvantage MileUp Card
By phone: Call the phone number on the back of your card or the number on the sticker attached to the front of the card. Verify your personal information (e.g. Social Security number, card number, or phone number associated with your application) to activate your AAdvantage MileUp Card.
On the website: Log in to your Citibank account (or create an account if you don’t have one) and find the activation page. Enter any required security information, including your credit card number, security code, the last 4 digits of your Social Security number, and your date of birth. Activate your AAdvantage MileUp Card as instructed.
On mobile: Log in to the Citibank mobile app using the same credentials that you’d use to log in online. Tap the credit card activation button, then enter any security information that’s requested on the following page.
Your new AAdvantage MileUp Card will be available for purchases immediately after activation. If you have any trouble activating your card, Citibank customer service can always help you out. You can give them a call at 1 (888) 766-2484.
To activate a credit card, call the number on the back of the card or go to the website listed on the activation sticker attached to the card. Credit card activation typically requires the credit card number, the security code (CVV), or both.
The exact steps required to activate a credit card depend on the card issuer, so it’s best to follow the instructions from the sticker attached on your card. If you’ve lost your sticker...
You can activate your credit card without calling by using the issuer’s website or mobile app, in most cases. It also may be possible to activate your card in person by visiting one of the issuer’s branches and speaking with a teller.
When you receive your credit card in the mail, there should be instructions for exactly how to activate your card and what methods are available. The exact steps will differ from issuer...
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