Step 1: Open your device Settings and tap "iTunes and App Store."
Step 2: Tap your Apple ID, then "View Apple ID." The email address used for your Apple ID will be shown here. Mine has been removed for security/privacy.
Step 3: Tap "Payment Information."
Step 4: Update your billing information, and tap "Done" in the top right.
Have questions? You can email us at firstname.lastname@example.org. Or you can contact us at (872) 814-6308 (USA Only). Our Live Support hours are 9am-5pm EST Monday-Friday and 9am-1pm EST on weekends.