Sent from my Nexus 7 using XDA Premium HD app
My Nexus 7 also came with some screen flicker (brightness random fluctuation) at low brightness. However, I noticed that while I was fixing my other problem (left side screen lift), when I left the back cover off the device there didn't appear to be any screen flicker! I tested by using gMaps on 10% brightness with WiFi on.
If anybody else who has the screen flicker problem would also try this method and report their results, it might help to isolate where the problem is or maybe even contribute to finding a fix.
I reported this previously that removing the cover makes the screen flicker go away. I returned the affected unit, one out of three, so I can't try it but you can try putting electrical tape over both WIFI contacts on the inside cover and put the cover back on to see. If the screen flicker is still gone you can take it one step further and cover just one of the WIFI contacts. If still gone and you're daring, cut out a small strip down the center of the WIFI antenna tape on the cover as perhaps there's a shorting issue.
I decided I might as well try this advice and after about 20 minutes of testing this seems to work for me. Took some electrical tape and covered the bottom WIFI contact on the back cover and while I've taken a little hit in signal strength it seems my flicker is gone or drastically reduced.
Ordered a replacement today due to this issue. Also, left side of the screen started raising a bit as if it was not glued properly. Funny thing is that the guy @Google support knew only of the raised screen issue, says he never heard about the flicker (and started attributing that to the raised left side). Serial is C70KBC0.... not sure if the new one will have any of the issues resolved. I also played around with developers options, to see if that would somehow reduce the flicker but no luck really.
Will give an update for the new one when it gets here.
Sent from my Nexus 7 using xda app-developers app
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