In this article, you can learn how to auto-tune to the best available resolution on your Xfinity X1 TV Box, including HD channels, using the X1 On-Screen Guide.

Auto-Tuning Channels

To access Preferences:

Using the remote press the xfinity button.
Highlight Settings (the gear icon) and press OK.
Highlight Preferences and press OK.
Highlight General and press OK.
Press the down arrow on the remote and highlight Prefer Best Available Resolution. Then press OK to toggle the feature on or off.
Press Exit to finish.

Changing the Resolution on Your X1 TV Box

You can easily switch between higher and lower resolutions on your X1 TV Box — including to 4K UHD.

From within a program’s mini info panel, you’ll see a Watch in 4K UHD, Watch in HD or Watch in SD button. Selecting the available option will change the program to the desired resolution on your X1 TV Box.

The Sportsnet Central page is displayed with the option to Watch in 4K UHD selected.

Notes:

If your Prefer Best Available Resolution setting is set to on, you won’t be able to downgrade the resolution on your X1 Box.
You’ll only receive the 4K option if you have a 4K capable Xfinity TV Box and 4K capable TV. For more information, see 4K Ultra HD (UHD) and High Dynamic Range (HDR) on Xfinity TV.