I bought the original Nexus 7 the day it came out in 2012 and since it has had an annoying screen flicker issue which is most visible on white backgrounds like surfing the web. I have put up with this for over a year but finally got annoyed enough to see if there was a way to fix it. I searched the web but did not find a solution to this issue. I tried a bunch of stuff like tweaking Wi-Fi settings, setting the backlight to a constant brightness, and using root only backlight control program all will no luck. It seems to be an EMI issue that stems from the Wi-Fi connection, if I turn off Wi-Fi the issue resolved itself but that makes the tablet pretty useless for my needs. So I popped the back cover to see if I could shield the board from the Wi-Fi antenna. I have been able to resolve the issue and here is a basic rundown of how to fix the issue.