If maker and seller won't tell, no sale. Also, the findings so far is the WiFi is weak on all Smart TVs. To the point that most makers ask the router or rather hotspot be at 20 or less feet.
That said you could get a 802.11ac client to stand in for the weak Smart TV WiFi.
The subject says it all, really -- I have no choice but to have my TV a fair distance from the wireless router. I have a 802.11ac router and would like to stream Netflix in 4k. My router is fast, but that won't really help me much if the TV can't support the ac protocol. For the life of me, I can't seem to find this info listed in the tech specs anywhere. Can someone please enlighten me? Thx!