Well, how can I check if an android device has Camera2 api features implemented or not? There are many new features in camera2 api such as manual controls. So how can I know
Install the app: Manual Camera Compatibility. It checks for Manual Focus, WB, ISO, Shutter speed and RAW support. All exposed via the camera2 HAL driver. I've installed the above in the AT&T store to check phones before buying. A great way to know if you're buying yesterday's model.
https://play.google.com/store/apps/details?id=pl.vipek.camera2_compatibility_test&hl=en