Can't mirror Samsung S20 screen on Roku Premiere 3920RW using Smart View or Windows

Hi serlcb,

Thanks for posting here in the Roku Community!

We appreciate you for sharing this information with us, and we'd be more than happy to assist. Upon reading your post, you seem to be running the older version of the Roku OS. Would you mind checking for available updates by navigating to Settings > System > System Updates and trying to update your Roku device?

After this, kindly check if you're able to see if you're able to connect to the Screen Mirroring feature.

Please let us know what you find out.

All the best,
Kash

We're grateful to have you here at the Roku Community, jonny_neutrino!

Thanks for reaching out regarding your screen mirroring issues. We'd be more than happy to find you the best resolution possible.

Refer to our Support article for further assistance and details about How to screen mirror your Android Roku streaming device. 

Let us know how it goes! We'll be anticipating your update.

Kind regards,
Carly