Update your AT&T email password on your smartphone
If you’ve changed your email password online, make sure that you’ve updated it on your smartphone as well.
Update your password on your smartphone
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Have you recently reset or changed your email password on your desktop computer or tablet? If you access the same AT&T email account on all your devices, you will need to update the email password on your smartphone as well.
Decide which scenario best describes you:
You access the same email account (such as Exampleemail@att.com) on your PC/tablet and on your smartphone. You will need to update your email password.
You access firstname.lastname@example.org on your PC/tablet but Attcustomer@att.com on your smartphone. You do not need to update your email password on your phone.