The XR16 works with a Flex TV Box provided by Xfinity, so you need the box and your TV to make the remote work. When you complete this process, your remote can control your TV. The XR15 works with ...

you'll aim the remote at the box and press the pairing buttons (often Xfinity + Select). However, it can vary greatly with certain models, and there are also options like using your voice to ...