First, you'll need to have a newer Pixel phone. Anything from a Pixel 6 and newer should work. From there, it's simple. Just go to google.com/android/beta and opt-in, using the device on which you want to use the beta. Once you enroll, you'll get updates as a part of the beta. From there, you can test all the new features.

Android 16’s first public beta will start rolling out later today, bringing with it dynamic lockscreen notifications for ride-sharing and food delivery, following yesterday’s reveal of a similar feature in Samsung’s Galaxy S25 phones.

Development on Android 16 is progressing quickly, and ahead of the projected l ate spring/early summer arrival Google has just released the very first beta version. Unlike Apple, which splits up public and developer betas, Android 16 beta is available to everyone — provided they have an eligible Pixel device.