Swappa.com is listing devices as compatible with GrapheneOS, but users are being warned to stay away. The discussion thread on Hacker News reveals that while Swappa markets certain Android devices as suitable for installing GrapheneOS, the platform lacks the necessary support to actually enable this functionality. This creates a misleading situation where potential buyers might purchase a device expecting GrapheneOS compatibility, only to find it unsupported.

The core issue appears to be a mismatch between Swappa's marketing claims and the technical realities of installing GrapheneOS on devices not officially supported by the project. Users are advised to verify GrapheneOS compatibility directly with the project's official resources before purchasing through Swappa.