I also have two smart Samsung televisions, purchased within the last few years, which suddenly, as of two days ago, fail to access the internet. My FiOS Quantum router, which I upgraded to over a week ago, still feeds wifi fine to the other devices in the home (two Lenovo laptops, an iPhone, a Samsung Galaxy SIII, and an Xbox One S). Only the two Samsung televisions developed this problem. It seems calling either Samsung OR Verizon leads to frustration.
Any ideas?