Is an Android Head Unit Legal in the US?

Conditional

An Android head unit is legal to fit in the US, but using it to show video or moving images to the driver while the car is moving is prohibited in most states. Installed sensibly, for audio, navigation and the reversing camera, it is fine.

Why?

Replacing the stereo with an aftermarket touchscreen unit is not itself restricted. The legal line is what it displays on the move: most states specifically prohibit a television or video screen positioned so the driver can watch moving images while driving, which is exactly what a full Android tablet-style unit can do.

Navigation maps and the backup-camera feed are generally allowed, and many units lock out video playback above a certain speed for this reason. Mounting also matters: the screen must not block the driver's view of the road or sit in front of an airbag.

So an Android head unit is road-legal as an infotainment and navigation system; running video or games on it where the driver can see them while moving is where it breaks state distracted-driving and screen laws.

What decides if it's legal

An aftermarket head unit is legal to install.
Most states ban a screen showing video or moving images visible to the driver while driving.
It must not be mounted where it blocks the view or an airbag.
Navigation and reversing displays are generally allowed.

Does it depend on your state?

Yes. The ban on driver-visible video while moving is set by state law and is common but not identical everywhere. Installing the unit is fine anywhere; how you can use its screen on the move is the state-specific part.

Related legality guides

Find your car in the garage

Sources

Vehicle modifications and equipment (NHTSA)

This page is general guidance, not legal advice, on the rules in the US for android head unit. The detail varies by exact vehicle and changes over time - confirm with your insurer and the EPA, NHTSA and your state DMV before modifying.