When I first got my Nexus 7 it had a dead pixel in the middle in the screen which was very annoying. I recently sent it in and got a new one (current) that worked fine, but now I have even more problems than before, first the auto rotate does not work at all, then I got ghosting within the screen, And when I recently updated to 5.0 the wifi shuts off when it's in sleep mode, and videos show in horrible quality, It's not in 1080p or anything it just shows at 240p or less. I got this Tablet since feburary 2014 and I didn't start having problems until I bought a poetic magnetic auto sleep case for it, which ended up damaging the sides of my tablet. Is my tablet still in warranty? Will I get a free replacement after this?