Mobile phone number accounts are created through the Amazon app for iOS and Android smartphones.
Mobile phone number accounts are accounts created using a mobile phone number instead of an email address. After creating your account, you must use your mobile phone number to sign in on all platform types. If you'd like the option of signing in with an email address, you can add an email address by going to Your Account and selecting Login & security.
If you don't have an email address linked to your account, you'll receive notifications and emails through the Message Center.
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