Hi, haven't been here for a while but my Hudl was one of the 'dodgy' ones with screen issues. I've been getting phantom key strokes etc which has been a real pain. I was debating whether to send it back but the prospect of re-installing stock was causing me to procrastinate.
I use my tab for a lot of comic reading using Perfect Viewer and was experience continual phantom key strokes which would knock the current file on a page or call up the settings etc (all very annoying). Of course quick press of the power button would resolve the problem but only for a few minutes.
so, I thought I'd do some trawling to see if there was any possibility of fixing the issue through a software fix. I've seen some discussion of tweaking the build.prop etc but I chanced up on this thread on XDA and decided to give the apk a go.
It's still early days but so far (touch wood) I haven't experienced any issues. I'd be very interested to hear of anyone else's experiences trying this little calibration app. I'll also come back and update the post if it hasn't worked (I'm expecting it not to just because so much of the evidence suggests a deeper lying reason for the issues). I'm hoping that a KitKat firmware update might resolve the problem but obviously we don't have any firm date for that as yet
Still, as long as it's not harmful I think it's worth exploring every option.