You can install the new Xbox Full screen experience mode for Windows on handhelds but whether it will work is another question entirely

Microsoft's "Full screen experience" mode for handheld gaming PCs shouldn't officially be usable yet, but it turns out you ...
TweakTown

Xbox app full screen experience leaked, can run on handheld PCs with Windows 11 25H2

The new-and-improved Xbox app for handhelds has been leaked through builds of the OS, and can run on any handheld gaming PC running Windows 11 25H2.

New Windows 11 update lets you try Xbox Ally fullscreen mode on other handhelds

You can now try the new fullscreen handheld mode on a Windows 11 handheld gaming PC by installing update 25H2, available to ...

We just got our first glimpse of the Xbox full-screen experience on an original Asus ROG Ally – and it has me pumped to see it on desktop PCs

The ROG Xbox Ally is edging closer with Microsoft's new full-screen experience on the horizon, but it's already accessible on ...