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TV must be connected to internet to get internet related applications work on it, there are two ways to connect the TV to internet, either plug Ether cable in LAN port at back of TV and hook it in internet modem OR get LG WiFi Adapter (recommended for this model), plug it in TV to connect the TV to router through wireless connection.
After connecting Ether cable or Wifi Adapter, need to run Network Setup in TV menu so establish connection with modem/router then TV will be able to run internet applications.
For Netflix, you need an active Netflix account and register your TV on Netflix account page as procedure will be mentioned on Netflix page to sync this TV with your Netflix account to get video streaming.
Please check following link to view WiFi adpater for this TV for wireless internet connection, if required..
And may please check/ download TV user manual copy from following LG link to get info about network setup in TV..
I trust my input will help you out. Please feel free to respond if you have any additional questions.
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