The second Android 11 Developer Preview rolls out today, and though it still isn't meant for general consumption just yet, it introduces quite a few new technical tweaks that app-makers and Android enthusiasts will enjoy playing with. While we start digging for undocumented changes, we already have a small list of tweaks to peruse in this latest release.
The more interesting publicly revealed additions include:
- 5G state detection for apps. (I.e., apps can tell if you're connected to a 5G network and do stuff with that info, like offer a higher bitrate for a stream, sync more frequently, etc.)
- Hinge angle detection for foldables — presumably similar to the Galaxy Z Flip's "flex mode" UI changes at certain angles.
- Call screening improvements, with STIR/SHAKEN verification, the ability to report a call rejection's reason, support for a new post-call screen for actions, and contact list verification.
- Better variable refresh rate support.
- "Resume on reboot" update feature to allow apps to run after OTAs are installed — no missed messages as your phone waits for you to unlock it should you schedule updates to be installed overnight.
- More privacy tweaks, including camera and microphone permission changes and more scoped storage improvements.
- Neural Networks API improvements.
Device support at this early stage is still limited, with only Google's first-party Pixel phones getting official images. Unless you want to play with a GSI, that means you'll need a Pixel 2 or later to try Android 11 DP2. If you haven't already migrated to the Developer Previews, these images still need to be manually flashed — you can't just check a box online, as you'll be able to do later when the Beta Program starts.
However, if you already installed DP1 or the bug-fix DP1.1 update, you have the option to receive today's update to DP2 as an OTA, though there might be a delay compared to manually flashing it. You can also use the online Android Flash Tool if that's more convenient for you.