Release notes

12L Beta 2

Release date: January 12, 2022
Build: S2B2.211203.006
Emulator support: x86 (64-bit), ARM (v8-A)
Security patch level: January 2022
Google Play services: 21.45.15
API diff:

About 12L Beta 2

Beta 2 is now available, with the latest improvements and bug fixes. 12L is still in active development, so the Android system and apps might not always work as expected. In general, most apps will work as expected, as will most APIs and features, but please review the known issues listed on this page to get a better idea of what to expect.

How to get Beta 2

You can install this release on any Pixel 3a, 4, 4a, 5, or 5a series device. We're also working to bring 12L to Pixel 6 soon.

If you’re already running a Beta or Developer Preview build, you will automatically receive an over-the-air (OTA) update to Beta 2.

Depending on your development and testing needs, you can also get 12L Beta in the following ways:

General advisories

Please be aware of these general notes about the release:

  • This release might have various stability, battery, or performance issues.
  • For users with accessibility needs, this release might not be appropriate for daily use.
  • Some apps might not function as expected when running on this release. This includes Google’s apps as well as other apps.
  • 12L Developer Preview builds are not Compatibility Test Suite (CTS) approved, but they have passed preliminary testing and provide a stable set of pre-release APIs for developers. Apps that depend on CTS-approved builds or use SafetyNet APIs might not work normally on 12L builds.

Get support

Two primary support channels are available to you when developing and testing with the 12L Beta. The channel you should use to get support depends on where you are encountering your issue.

Support for issues with devices, system issues, and issues with Google apps

Use the Preview issue tracker to create new issues and to view and track issues that you and other developers have submitted. Before creating your own issue, check the known issues listed on this page and search the lists of top open issues and recently created issues to see if someone else has already reported it. You can subscribe and vote for an issue by clicking star this issue .

See Where to report issues to find an issue template that best matches the type of issue that you are encountering.

Support for issues with other apps

Contact the app developer directly.

Support for issues with Android Studio, the Android Emulator, or other tools

See the Report a bug page in the Android Studio documentation for details on how to submit a bug for these issues.

To discuss issues or ideas with other developers working with the 12L Beta, join the android_beta community on Reddit.

Top resolved issues

The following top issues have been resolved in 12L Beta 2:

Developer-reported issues

  • Fixed an issue where the clock on the lock screen was not centered on the screen. (Issue #209866500)

  • Fixed an issue where all the recent apps in the recent apps view showed as a black image with an "App isn't available" toast message. (Issue #210442689)

  • Fixed an issue where using gestures to switch between apps sometimes left an image of the previous app's state showing over part of the current app. (Issue #211095552)

Other resolved issues

  • Fixed an issue where some icons on the lock screen were too small when viewed on larger screens.

  • Fixed an issue where sometimes the lock screen was not dismissed after unlocking a device.

  • Fixed an issue that caused bitmap images to disappear or otherwise render incorrectly in widgets.

Top open issues

See top open issues for the latest list of top open issues that have been reported by developers and users.

Known issues

Based on our testing, you might encounter the following issues when using 12L Beta 2. These issues are already known, so there’s no need to file additional reports for similar issues.

Google apps

  • The Settings app does not display using a List Detail layout on large screens. To work around this issue, navigate to Settings > System > Developer options > Feature flags and enable settings_support_large_screen.

Android Studio and tools

  • When using the Android Emulator with a resizable device definition and a display mode other than a foldable, a long-press does not show or hide the taskbar. Normally, users can show or hide the 12L taskbar by long pressing it, regardless of screen size.

Previous preview releases

12L Beta 1

12L Beta 1

Release date: December 8, 2021
Build: S2B1.211112.006
Emulator support: x86 (64-bit), ARM (v8-A)
Security patch level: December 2021
Google Play services: 21.45.15
API diff:

Known issues

Based on our testing, you might encounter the following issues when using 12L Beta 1. These issues are already known, so there’s no need to file additional reports for similar issues.

Google apps
  • The Settings app does not display using a List Detail layout on large screens. To work around this issue, navigate to Settings > System > Developer options > Feature flags and enable settings_support_large_screen.
Android Studio and tools
  • When using the Android Emulator with a resizable device definition and a display mode other than a foldable, a long-press does not show or hide the taskbar. Normally, users can show or hide the 12L taskbar by long pressing it, regardless of screen size.

12L Developer Preview 1

12L DP1

Release date: October 27, 2021
Build: SPP4.211001.003
Emulator support: x86 (64-bit), ARM (v8-A)
Security patch level: October 2021
Google Play services: 21.24.23
API diff:

Known issues

Based on our testing, you might encounter the following issues when using 12L Developer Preview 1. These issues are already known, so there’s no need to file additional reports for similar issues.

Google apps
  • The Settings app does not display using a List Detail layout on large screens. To work around this issue, navigate to Settings > System > Developer options > Feature flags and enable settings_support_large_screen.
Android Studio and tools
  • When using the Android Emulator with a resizable device definition and a display mode other than a foldable, a long-press does not show or hide the taskbar. Normally, users can show or hide the 12L taskbar by long pressing it, regardless of screen size.