Samsung TV (18m old) constantly loses Wi-Fi. All other devices are okay, but not this one. I've reset the Wi-Fi dozens of times and now it's happening several times a day. I can spend an hour trying to get it to connect. Help!
D/load a wifi analyser app, and see which wifi channels most in use in your locale; then adjust router channel to the least/ not used channels. Also ensure router's 2 frequencies have different SSID names.