It has been 8 months since I got the tablet and my Knox is tripped. I do believe that its a dead pixel and wondering if I can still get it replaced or not. It didn't have this dead pixel until now and it is really irritating me.. This is my first time having a Samsung device so I don't know what exactly Knox is or if my warranty is still valid, assuming its a standard 1 year warranty. Please somebody help me. I really need to know if I can get it replaced or not.