我的16 GB Nexus 7几天前抵达。这是我的第一个移动设备，相信它与否，我已经发现它非常有用。它的表现完美无瑕，但有一个小问题这是一个烦恼，没有。屏幕闪烁。
My 16 GB Nexus 7 arrived a few days ago. It's my first mobile device, believe it or not, and I've already found it to be incredibly useful. It has performed flawlessly, but there is one small issue that's an annoyance, nothing more. The screen flickers.
It happens in dimmer light, and only for a second or two at a time. I suspect, though I can't prove this, that it occurs during WiFi transmissions. Has anyone else encountered this? Is there a fix for this, even if it has to be some sort of warranty thing?
There just was a Blog on Land of Droid covering this issue. The author summed up a few conditions under which this "flicker" occurs:
According to that report, these 3 things are "AND-connected" (i.e. the flicker occurs when all of the 3 conditions are met). He's also hoping for a fix to come soon.
You might as well want to read the comments there, some seem to indicate possible solutions (including flashing a new stock ROM), but so far none of them are yet confirmed.
Sounds like this is one of two things to me.
Either a faulty screen / hardware. OR depending on the severity of this flicker it may be that the device has a light sensor that is trying to change the screen brightness based on the ambient light surrounding the device.
You could rule out the second option by going to your screen brightness in the settings and make sure that it is set to a static amount and that "Automatic brightness" is turned off. If after you do this you still notice the flickers I would lean more towards faulty hardware.
I have seen on some devices (don't have Nexus 7 so never on that) that the automatic brightness feature will sometimes cause the brightness of the screen to flicker somewhat wildly from all the way low to all the way high within a few seconds.
Turning off auto brightness worked for me.
As a recent (Christmas time) buyer with a new device, I can acknowledge this issue with Android 4.2. As per the bug report and the user tests here (under brightness heading), it looks to be a hardware problem rather than software.
evenafter warranty and replacement have shown the same issue (4 out of 4 replacements)
only temporarilywhich is disappointing.