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OnePlus 7T Pro suddenly lagging & system UI stops responding via OnePlus 7T Pro

  1. Killbeam
    Cupcake Sep 25, 2021

    Killbeam , via OnePlus 7T Pro , Sep 25, 2021 :
    This started about a month ago. The phone becomes unresponsive to the point where even the navigation buttons at the bottom don't work. A few seconds later, the phones tries to catch up on all the inputs. Sometimes, a popup comes with "System UI (or some app, like YouTube) stopped responding".

    I did a full factory reset in an attempt to fix the issue, but it came back within a day or two.

    Has anyone had this issue? Do you have an idea of what I could do to solve this?

    I am currently on the most recent OxygenOS version: OxygenOS 11.0.3.1.HD01BA
     

    #1
  2. drl431
    Community Hero 2020 Sep 25, 2021

    drl431 , Sep 25, 2021 :
    Hi, so a day or two after the factory reset, were you installing some of the same apps as before? One of these apps could be causing problems.
     

    #2
    Caomhin likes this.
  3. Killbeam
    Cupcake Sep 25, 2021

    Killbeam , via OnePlus 7T Pro , Sep 25, 2021 :
    True, though I can't think of any new app I installed before this started happening.

    Is there a way to see which apps are active and how many resources they are using? Like task manager on windows.
     

    #3
  4. drl431
    Community Hero 2020 Sep 25, 2021

    drl431 , Sep 25, 2021 :
    Rather than throw more apps into the mix, I would try disabling apps to narrow down a possible culprit.
     

    #4
    Caomhin likes this.
  5. sand_man
    Eclair Sep 27, 2021

    sand_man , Sep 27, 2021 :
    I'm having a similar issue but mine is caused by a Google LLC update released on the 24th September (Google Play store).
    Version 12.37.22.23.arm64
    Disabling the app in settings forces it back to an earlier bug free version.
    Version 11.21.9.21.arm64

    This doesn't quite fit with your timeline but it's worth a try.

    PS I'm still on Android 10 Oxygen OS 10.0.14.HD01AA
     

    #5