Google has released Android 16 Developer Preview 2 (DP2), providing an opportunity to test new APIs and features. This update builds on the features introduced in the first preview last month and is reported to offer improved battery life. Additionally, it introduces a new feature exclusive to Pixel devices- after the update, Pixel users will be able to unlock their phones using the fingerprint sensor even when the screen is off.
Android 16 DP2: New Features
A report from Android Authority reveals that Android 16 Developer Preview 2 introduces a new feature called Screen-off Fingerprint Unlock. Currently, the fingerprint sensor on Android devices requires the screen to be active for it to work. While there isn’t a direct setting for this, users can work around it by enabling the always-on display or using tap-to-wake. However, the new option in DP2 could change this by allowing fingerprint unlock even when the screen is off.
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This feature was found on the Google Pixel 9 Pro under Settings > Security & Privacy > Device Unlock > Face & Fingerprint Unlock > Fingerprint Unlock. It appears to be compatible only with devices that have an ultrasonic under-display fingerprint scanner. According to the report, the Screen-off Fingerprint Unlock setting does not function on older Pixel models running Android 16 DP2 without this specific sensor.
In addition, Google has confirmed that the latest Android 16 build offers improvements to battery life. The official changelog notes enhancements to app performance, battery optimization, and a reduction in compatibility issues.
Google states that Android 16 DP2 simplifies the process for apps to utilise adaptive refresh rate, a feature initially introduced in Android 15. This improvement is enabled through the addition of two new APIs and the reintroduction of an older one.
Additionally, the update is said to offer enhanced haptic feedback through new haptic APIs. These allow apps to define the amplitude and frequency curves of a haptic effect, regardless of the variations in device capabilities.
