A:AnswerNo, this TV cannot connect to Wi-Fi, it doesn't have built-in Wi-Fi.
However, you can connect a streaming device to one of the HDMI inputs on the TV.
A:AnswerI am not familiar with wind stream but as long as you have a wireless signal from a connected router and a compatible streaming device with HDMI output the TV will stream. It is NOT a Smart TV if that is your question but adding a streaming device (Roku, Apple, Firestick Etc) it will stream. Change input to change HDMI devices. It has 3 HDMI ports ! This TV is an unbelievable bargain in my opinion. I also have a regular tv antenna connected as well as my DVD player. 5 input sources is great! Good luck.
A:AnswerIf you are asking if it has a sleep timer function. That you can set and have it turn the TV off after a certain amount of time then yes. Otherwise no. Hope that helps.