Connecting internet to Samsung Smart TV

I just fixed my Samsung TV issues. I too couldn't connect.  Here's how I did it…

go to the T-Mobile app

click on network

click on the plus sign and add a new WiFi network.  Weird I know. 
 

I used the name “Living room TV” for the WiFi name and added a password 

Once completed it added that to my WiFi profile.  
Go back to your TV and choose this new one as your WiFi — 

My Samsung connected.  Apparently it needed its own name.  Lol! 
Hope this helps! 

I too am having issues with the password. Im getting a "incorrect password " message. Samsung Smart TV.

Tried the changing the name like you said to living room tv and adding a new wifi network. Worked perfect 👍