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Pixel 4a touchscreen sensitivity with screen protector & Android 11. 1 Recommended Answer 130 Replies 618 Upvotes
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After the Android 11 update, many Pixel 4a owners (including myself) have had issues with the touchscreen sensitivity. Scrolling through apps is difficult and causes "phantom presses." Navigation gestures are often unresponsive or erratic. Gesture-based keyboards are nearly impossible to use.
 
https://reddit.com/r/Pixel4a users have been documenting this issue, & they have determined that the only current fix is to remove the screen protector from their 4a. This issue did not exist on the same phones with the same screen protectors when running Android 10. Some sort of screen sensitivity setting has been changed on the Pixel 4a through the Android 11 update that has made using the phone nearly impossible when a screen protector is installed. Some users also report that the issue becomes worse/more prominent when their 4a becomes hotter, like after/during charging or playing a game.
 
After the Android 11 update, the Pixel 4 has a touchscreen sensitivity toggle in the settings to make the phone work better with screen protectors. The 4a doesn't have this toggle, but is it possible that some software changes made on the Pixel 4 carried over to the Pixel 4a, causing this issue?

Again, as of right now, the only "solution" discovered for this issue is to remove the screen protector (or to downgrade back to Android 10). The following "fixes" were tested without success by multiple Pixel 4a owners on r/Pixel4a:
  • Reboot (sometimes seems to alleviate the issue, but doesn't fix it permanently)
  • Safe mode
  • Clearing cache of different apps
  • Changing accessibility settings
  • Factory reset

I'm posting this not as a plea for help from community members (though, I'm sure you're all lovely people), but more as an attempt to ensure that Google is made aware of this issue, as it is clearly something that can only be solved by a software update pushed to Pixel 4a devices.

Non-exhaustive list of threads of Pixel 4a owners discussing the issue on r/Pixel4a & r/GooglePixel:
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I'm getting this behavior too. I called google and they ran me through some steps. I did a boot to safe mode and still had the issue. I then went back to normal mode and got a system.ui error. Google ended up telling me they'd send me a replacement phone. That said, I just removed my screen protector and now it seems to be fine. Even swipe typing is working again. Weird.
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I contacted support before making this post, & they also suggested the standard troubleshooting steps (e.g., reboot, safe mode, & factory reset). It seems that the support teams (through no fault of their own) are unaware of how to troubleshoot this issue. The support rep I spoke with promised he would forward all the info I shared with him to the appropriate people so that this problem can hopefully be fixed on the software side (as it is clearly a software issue.)

Unfortunately, a replacement phone isn't going to solve this issue, as this is a software issue & not a hardware issue. Every Pixel 4a that has a screen protector installed & is running the latest version of Android 11 is susceptible to this issue.

Thank you, Li, for being yet another confirmation that the issue is caused by Android 11 not playing nicely with screen protectors.

Here's hoping Google is able to push out a software update ASAP 🤞
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As this does seem to be  bug (based on what is in the original post), in order to attract the attention of the development team, please leave on-device feedback in Settings > About Phone.  Although you won't receive a personal response unless the team requires further information, this is the best way to draw issues to the team's attention and to ensure solutions can be found.
 
@Connor:  If you wish, you could lodge an issue on the tracker HERE and those also experiencing this problem can then 'star' the page that will provide them with email updates of any progress made.
 
Thank you.
 
Penny
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Same here on the 4a...no issues until android 11 update.  Immediately after that I can barely scroll without a link being hit and texting is all kinds of mistakes.  It seems like the regular pixel 4 received an increased touch sensitivity toggle under display setting but it's not there in the 4a so maybe it's on now and we just don't have a way to turn it off?🤷‍♂️
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The update worked for me on my 4A.  Applied a new glass screen protector and it works fine.
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