[BUG] Screen Sensitivity Issue-Lag (4.0.4-4.1.x)

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Problem summary
Known cause (might be others): selecting an app from the Recents list (Task Switcher)
Temporary fix: turn the screen off, then back on
Workaround: avoid using Recents list (you can use a 3rd party task switcher instead)

How to test: open Messaging, hit Home, hit Recents, select Messaging from the list. Your screen will be less sensitive until you turn the screen off and back on. You can view the pressure by going to Settings -> Developer Options -> turn on Pointer Location. This will allow you to see the Prs of each tap in your status bar. Normally your lightest taps that register will show anywhere from 0.28 to 0.32. However, after this bug is activated, you will mostly get values over 0.40 for your light taps. This is actually a very noticeable increase, especially when trying to type quickly.

Please report any other known methods to "activate" this bug. After re-assigning my Recents button to a 3rd party app (I'm using Simple Task Switcher), I haven't seen this bug at all. It seems that a couple of people have seen it produced by something other than Recents, but they haven't narrowed it down (or reliably reproduced it on purpose).

Please star this issue officially so Google can fix:
Link is http://code.google.com/p/android/issues/detail?id=29734

Note: Downloading & using Screen filter application from play store, with brightness set to

Your hands are really dirty or really dry. Try moisturizer or something.

Been using my screen for almost hour straight now. No issues.

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iphone. helping computer illiteracy become popular since 2007.

Hehe yes this s gonna be a difficult one to confirm. But it is definitely not dirty hands. To clarify, a quick press of the power button to lock then unlock completely fixes the issue. Same fingers suddenly register perfectly. This is driving me nuts as the phone is not even usable right now. Literally.

Originally Posted by @rbiter

Been using my screen for almost hour straight now. No issues.

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iphone. helping computer illiteracy become popular since 2007.

ios 6.2 doesnt get issues.

I don't know about your other experiences, but as far as the browser goes I have the same scrolling effects as you do. I think this is how it is meant to be. They tightened the scrolling a lot and I kinda like it. Before one small flick would send me across the whole page, which was kinda annoying. Just my preference.

I'm not having this problem. It would drive me crazy too. Been using my phone alot over the past two days and I didn't run into this problem even after almost 1h of continuous surfing. Also a few checkpoints of Shadowgun didn't trigger it.

But you can confirm your problem if you enable "cursor position" in the dev options (hope that's what it 's called in english). "Prs" and "Size" should need a lot more than around 0.30-0.40 to register your touch if you have the problem you describe.

I am sorry that you're experiencing this, but 4.0.4 has nothing to do with this. 4.0.4 is just software, Galaxy Nexus is not a pressure-sensitive device, it is merely touch-sensitive. Which means that software gets an analogue signal from the touchscreen, either 1 or 0. It has no 'range' of sensitivity, so it cannot decrease in sensitivity in software (if it did, then it would not work at all).

This is entirely hardware issue and I suggest either making sure your screen is clean, your screen protection thing (if you use one) isn't acting up or if your hardware has become faulty (have you dropped it recently?).

If problem persists then return under warranty.

My wife had this issue once.

It was the third party launcher she was using.

I don't think its a matter of touch sensitivity dropping, its a matter of the system just being too slow to really work right.

It was ADW EX, fwiw.

Originally Posted by kristovaher

I am sorry that you're experiencing this, but 4.0.4 has nothing to do with this. 4.0.4 is just software, Galaxy Nexus is not a pressure-sensitive device, it is merely touch-sensitive. Which means that software gets an analogue signal from the touchscreen, either 1 or 0. It has no 'range' of sensitivity, so it cannot decrease in sensitivity in software (if it did, then it would not work at all).

This is entirely hardware issue and I suggest either making sure your screen is clean, your screen protection thing (if you use one) isn't acting up or if your hardware has become faulty (have you dropped it recently?).

If problem persists then return under warranty.

Lol that is hilarious. You forgot the step where its the OS that actually processes the input data, so in that process, a ton of problems can arise.


And personally, since 4.0.4 I have also been experiencing a "similar" issue. When scrolling down (and only down), I experience a kind of "lag" like if it only registers the swipe movement half an inch lower. Its not a big deal, but still an issue.

Edit : What he explains as "pressing very hard" is most likely the fact that when you press harder you actually cover more surface, so the amount of extra input data can definitely impact the behavior.