If your phone got disconnected that's an issue for you and your carrier to work out.
What LED gave out? The display is OLED. https://www.avforums.com/threads/do-oleds-suffer-from-dead-pixels-more.2028862/ and many other posts tell us that these can indeed get dead pixels. This may not be covered in warranty at all. There are thousands if not millions of rant posts about dead pixels on LCD, OLED and any pixel driven display.
And we are always reading the fine print to see if they opt out of replacement of the display with UP TO so many pixels.
This is not a Samsung only issue/problem.
I purchasing Samsung product it's very pathetic it has been 8 month only led failed and denied to provide warranty by blaming customer. When i send them my mobile it was in good condition, now there are saying it is physically damaged.
Ticket Number : 4148470768
they not even listening and they disconnect my phone.