A:AnswerYes, Wi-Fi is built in and will connect pretty seamlessly.
I put this TV on my back porch under the covering and am running Apps over the wi-fi so I didn't have to run any cabling to it.
A:Answer1 year,,, I usually don't, but I did buy the extra 5 yr. cause I don't know how well the sets are today. My last set(lcd samsung) lasted 15 years with only 1 problem,so....