GrapheneOS has official production support for the Pixel 2, Pixel 2 XL, Pixel 3,
+ Pixel 3 XL, Pixel 3a and Pixel 3a XL. The release tags for these devices have official
+ builds and updates available. These devices meet the stringent privacy and security
+ standards and have substantial upstream and downstream hardening specific to the
+ devices.
+
+
Many other devices are supported by GrapheneOS at a source level, and it can be
+ built for them without modifications to the existing GrapheneOS source tree. Device
+ support repositories for the Android Open Source Project can simply be dropped into
+ the source tree, with at most minor modifications within them to support GrapheneOS.
+ In most cases, substantial work beyond that will be needed to bring the support up to
+ the same standards. For most devices, the hardware and firmware will prevent providing
+ a reasonably secure device, regardless of the work put into device support.
+
+
GrapheneOS also supports generic targets, but these aren't suitable for production
+ usage and are only intended for development and testing use. For mobile devices, the
+ generic targets simply run on top of the underlying device support code (firmware,
+ kernel, device trees, vendor code) rather than shipping it and keeping it updated. It
+ would be possible to ship generic system images with separate updates for the device
+ support code. However, it would be drastically more complicated to maintain and
+ support due to combinations of different versions and it would cause complications for
+ the hardening done by GrapheneOS. The motivation doesn't exist for GrapheneOS, since
+ full updates with deltas to minimize bandwidth can be shipped for every device and
+ GrapheneOS is the only party involved in providing the updates. For the same reason,
+ it has little use for the ability to provide out-of-band updates to system image
+ components including all the apps and many other components.