My brand new TV UE 55NU8005XXC has a problem with certain voice commands, such as Channel 1, channel XX, it responds" Sorry I can't set that mode...😭
But it responds to Channel upp, channel down etc,.
Updated to most recent software.
Well, party...Samsung Tech support said its because I am getting my TV through a set top box and that is not reacting to voice commands. But I use now Anazon Alexa through Harmony hub to change the channels and that works for me.