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In addition to a Feature Drop and the latest security patch, the December 2021 update addresses a whole slew of Android 12 issues for the Pixel 3a to 6 Pro. An organized list of those fixes is available below.

Fixed Pixel 6 & 6 Pro issues:

As a reminder, the Pixel 6 December updates will begin rolling out next week. Google has yet to release these factory images.

Apps

  • Fix for issue causing Assistant to unintentionally start a phone call in certain conditions *[1].

Audio

  • General fixes & improvements for audio playback issues in certain apps *[1].
  • Fix for issue causing audio noise in videos captured while using certain phone cases *[1].
  • Fix for issue causing microphone to cut out during calls in certain conditions *[1].
  • Fix for issue causing occasional audio glitch when adjusting volume levels *[1].
  • Fix for issue occasionally preventing audio playback from speaker in certain conditions *[1].
  • Fix for issue preventing Now Playing to search for unrecognized music *[1].

Battery & Power

  • Additional improvements for battery charging information shown in notification shade *[4].
  • General improvements for wireless charging in certain conditions *[5].
  • Improvements for alignment detection on Pixel Stand in certain conditions *[5].

Biometrics

  • General improvements for fingerprint sensor stability & performance *[1].
  • Additional fixes for issues preventing enrollment of new fingerprints in certain conditions *[1].

Bluetooth

  • Fix for distorted audio over Bluetooth in certain scenarios *[1].

Camera

  • General image quality improvements in camera preview/capture *[1].
  • General improvements for camera stability & performance *[1].
  • General improvements for auto-focus response in certain capture modes *[1].
  • General improvements for color consistency in viewfinder preview *[1].
  • Fix for issue causing blank viewfinder preview in certain conditions *[1].

Display & Graphics

  • Enable ANGLE graphics support library for certain apps and games *[1].
  • Fix for occasional screen flicker during brightness adjustment *[1].
  • Fix for issue preventing Smooth Display to switch display refresh rate in certain conditions *[1].
  • Fix for issue causing screen flicker after locking or unlocking device in certain conditions *[1].

Network & Telephony

  • Fix for issue that disabled call features on certain devices or networks in certain conditions *[1].

Sensors

  • General improvements for sensor stability & response in certain conditions *[2].
  • General improvements for Quick Tap response & performance *[2].
  • General improvements for Auto-rotate response in certain device orientations *[4].
  • Fix for issue preventing lift to wake and double tap to wake in certain conditions *[1].
  • Fix for issue preventing Always-on-display from turning on in certain conditions *[1].
  • Fix for issue causing unexpected haptics or vibration in certain conditions *[1].

System

  • Kernel update to 4.9.279 for Pixel 3a & Pixel 3a XL.
  • Kernel update to 4.14.243 for Pixel 4, Pixel 4 XL & Pixel 4a.
  • Kernel update to 4.19.202 for Pixel 4a (5G), Pixel 5 & Pixel 5a (5G). 
  • Fix for issue causing device to freeze after sleeping while charging in certain conditions *[1].

Wi-Fi

  • Fix for issue that would occasionally disconnect device from Wi-Fi in certain conditions *[1].

Fixes for all Pixel phones (3a – 6 Pro):

All Pixel phones (including the 6 & 6 Pro) benefit from the December update fixes listed below. The Pixel 3/XL will get these patches as a cumulative OTA in the first quarter of 2022. Factory/OTA images for the Pixel 3a – 5a are available right now.

Apps

  • Fix for stuck or frozen app UI in certain conditions *[7].

Battery & Power

  • General improvements for battery & thermal performance in certain conditions *[7].
  • Fix for issues occasionally causing incorrect Battery usage accounting to display in Settings *[7].

Bluetooth

  • Fix for issue causing Bluetooth to turn on after disabling in certain conditions *[7].
  • Fix for volume adjustment issues with certain Bluetooth audio devices *[7].

Display & Graphics

  • Add additional example images for display color options in Settings *[7].
  • General improvements to keep the screen on after multiple manual wakes *[7].
  • General improvements for Adaptive brightness response in certain conditions *[7].
  • Fix for occasional white screen flash after display goes to sleep *[7].

1: Nov | 2-4: Dec

Framework

  • Fix for issue causing app icons to display as pending downloads after installation completes *[7].
  • Fix for issue causing Play store app installation to pause indefinitely in certain conditions *[7].
  • Fix for issue occasionally preventing Work Profile setup to complete in certain conditions *[7].
  • Fix for issue preventing all settings or apps to be restored from backup during setup in certain conditions *[7].

Media

  • Fix for issue causing system crash during media playback in certain conditions *[7].

Network & Telephony

  • General improvements for network connection stability & performance *[7].
  • Fix for crash in Settings when toggling Airplane mode on certain network configurations *[7].

Sensors

  • General improvements for Adaptive brightness response in certain conditions *[7].

System

  • Kernel update to 4.9.279 for Pixel 3a & Pixel 3a XL.
  • Kernel update to 4.14.243 for Pixel 4, Pixel 4 XL & Pixel 4a.
  • Kernel update to 4.19.202 for Pixel 4a (5G), Pixel 5 & Pixel 5a (5G). 
  • General improvements for system stability & performance *[7]
  • Fix for issue occasionally preventing OTA updates to install *[7].

User Interface

  • Add Material You dynamic theming support for the device boot animation *[7].
  • Improvements for Internet tile in Quick Settings *[7].
  • Improvements for Quick Settings layout in certain device orientations *[7].
  • Fix for issue causing display to stay on during wireless charging *[5].
  • Fix for issue causing Game Dashboard icon to display over lock screen *[7].
  • Fix for issue causing incorrect colors or theme to display in Quick Settings in certain conditions *[7].
  • Fix for issue causing lock screen icons to display in notification shade in certain conditions *[7].
  • Fix for issue causing notification History & Clear all buttons to occasionally display incorrectly *[7].
  • Fix for issue causing persistent app media controls in notification shade in certain conditions *[7].
  • Fix for issue causing persistent call notification in certain conditions *[7].
  • Fix for issue causing persistent Turn off work apps button in app drawer *[7].
  • Fix for issue causing screen flicker after locking or unlocking device in certain conditions *[7].
  • Fix for issue causing Settings to crash in Conversations menu in certain conditions *[7].
  • Fix for issue causing undismissable Game Dashboard button during gameplay in certain conditions *[7].
  • Fix for issue causing app drawer to scroll to the top after clearing search query *[7].
  • Fix for issue causing certain home screen icons to appear misaligned in certain conditions *[7].
  • Fix for issue enabling Quick Settings toggles to be tapped from home screen in certain conditions *[7].
  • Fix for issue hiding date or time in Quick Settings in certain conditions *[7].
  • Fix for issue occasionally causing blank background on home screen after setting wallpaper *[7].
  • Fix for issue occasionally causing Quick Settings to pull down after unlocking device *[7].
  • Fix for issue occasionally causing UI elements to display with transparent backgrounds *[7].
  • Fix for issue occasionally displaying Work Profile badge icon on personal apps or contacts *[7].
  • Fix for issue preventing conversation bubble to be dismissed in certain conditions *[7].
  • Fix for issue preventing search results to display in Settings in certain conditions *[7].
  • Fix for occasional screen flicker in notification shade when dragging from top of screen *[7].
  • Fix for occasional flickering when quickly switching between apps in certain conditions *[7].

Wi-Fi

  • General improvements for Wi-Fi stability & performance *[7].

Device-specific fixes:

Use the following table to find device and generation-specific Pixel (including 6) issues resolved by the December update:

  • *[1] Included on Pixel 6 & Pixel 6 Pro
  • *[2] Included on Pixel 4a (5G), Pixel 5, Pixel 5a (5G), Pixel 6 & Pixel 6 Pro
  • *[3] Included on Pixel 4a (5G), Pixel 5, Pixel 5a (5G)
  • *[4] Included on Pixel 4, Pixel 4 XL, Pixel 4a, Pixel 4a (5G), Pixel 5, Pixel 5a (5G), Pixel 6 & Pixel 6 Pro
  • *[5] Included on Pixel 4 / XL, Pixel 5, Pixel 6 & Pixel 6 Pro
  • *[6] Included on Pixel 4 & Pixel 4 XL
  • *[7] Included on Pixel 3a, Pixel 3a XL, Pixel 4, Pixel 4 XL, Pixel 4a, Pixel 4a (5G), Pixel 5, Pixel 5a (5G), Pixel 6 & Pixel 6 Pro

Battery & Power

  • Additional improvements for battery charging information shown in notification shade *[4].
  • General improvements for wireless charging in certain conditions *[5].
  • Improvements for alignment detection on Pixel Stand in certain conditions *[5].

Biometrics

  • Pixel 4/XL: General improvements for face unlock stability & performance *[6]

Bluetooth

  • General Bluetooth stability improvements for certain conditions *[3].

Sensors

  • General improvements for sensor stability & response in certain conditions *[2].
  • General improvements for Quick Tap response & performance *[2].
  • General improvements for Auto-rotate response in certain device orientations *[4].

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About the Author

Abner Li

Editor-in-chief. Interested in the minutiae of Google and Alphabet. Tips/talk: abner@9to5g.com