I have UE40h6400AW smart tv and I have problem with YouTube, Netflix, HBO apps on SmartHub when I using my router on 4G network.
When I tur it on on 3G network everything works well.
Signal for 3G and 4G is full (100%). All other devices (laptops, computers, tablets, mobiles) works well.
I try all possible solution on my smart tv (factory reset, SmartHub reset, DNS changing, .....) but nothing helped.
I also try with wifi and wired network.