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Help & Customer Service

# About the Effects of Signing Out from Amazon Apps

When you sign out from one of Amazon's Single Sign On apps, you're automatically signed out from all of them.

The following Amazon apps currently support a Single Sign On experience:

- Amazon Music app for Android, version 3.0 or higher
- Kindle App for Android, version 4.3 or higher
- Amazon Appstore App, version 7.0 or higher
- Amazon app for Android Phones and Amazon Underground app, version 2.9.7 or higher
- Prime Photos for Android, version 3.2 or higher
- Alexa app

When you sign in to one of these apps, you're automatically signed in to all other Single Sign On apps installed on your device. You don't have to enter your email address or mobile phone number and password to sign in to each app separately. In turn, when you sign out from one of these apps, you're also signing out from all of them.

To sign out, launch a Single Sign On app, open the Menu, and tap Settings. Tap Sign Out or Log Out, and then confirm.

Note: You can't sign out directly from the Appstore app. However, if you sign out from another Single Sign On app, you're also signed out from Appstore.

While you're signed out, you can't access your cloud-based content (books, music, personal videos, etc.) or apps downloaded from Amazon Appstore.

## Amazon Music App for Android

Unless signed-in, you don’t have access to your cloud-based Digital Music, but you still have access to the music downloaded to your device. When you sign back in, you regain access to your cloud-based music.

## Kindle for Android

You must be signed in to your account to access your Kindle library. When you sign back in using the same account, you regain access to your books and magazines; if you sign in to a different account, you have access to the cloud-based books on that other account.

## Amazon Appstore

You must be signed in to have access to your downloaded apps. These apps aren't deleted. You just aren’t able to access them until you sign back in. You also can't download additional apps from Amazon Appstore until you sign back in.

## Amazon Underground App for Android

If you regularly sign out from the Amazon Underground app after placing an order, you'll also be signing out from all other Single Sign On apps on your device.

Tip: Shopping within an Amazon Underground app is as secure as making purchases from the Amazon.com website. For existing accounts, credit card information is not transmitted when you make a purchase, as it is already associated with your account and encrypted at Amazon. We do transmit credit card information when you set up a new account from your mobile device, but we use SSL encryption to ensure that your information is secure.

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