Can you please specify the issue you are experiencing? What are the steps to reproduce the issue you are seeing? Which specific button are you pressing? With more detailed information, we will be able to assist you further.
Is this an actual Roku remote, or is it a third party universal remote?
I don't think I've ever seen a Roku remote with a Previous Channel button, but they are common on universal remotes. To my knowledge, Rokus have no Previous Channel function for such a button on a third party remote to activate.
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Streaming Stick 4K+ 3821 | Streaming Stick+ 3810 | TCL Roku TV 43S245/C107X
Just passing along to the comment that you have never seen a Roku remote with a previous channel button. I have purchased during this last year, four Roku remotes, three streaming sticks plus an Express 4K and ALL remotes contained with the units had a Previous Channel button. Currently, for me at least, using the Express 4K, the previous channel button does NOT function what so ever. So, unfortunately, it is a continuing issue that has yet to be answered. I am still attempting to garner an answer. Thus far, nothing is resolved and I am beginning to believe Roku does not really wish to resolve the issue. Bur, that indeed may be just my frustration at continuing issue problems with Roku.
@WTH1, here's the current simple remote that has the same buttons as the voice remotes. Which of these buttons do you believe is a dedicated "previous channel" button because I can tell you that none of them are?
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It's the instant replay button. My 1st Roku remote,if I pressed the instant replay button it would go back to the previous channel. My new one, with a mute button, doesn't do instant replay or previous channel