1. v009's Avatar
    Hi friends,
    I have recently upgraded my Lumia 920 to wp8.1 cyan using recovery tool. Everything was working fine as usual.. Recently from few weeks I am noticing lag,my device hangs my touch screen becomes unresponsive but hardware touch button below works.. Some timemes screen flickers like it is hung... Then I need to lock it using hardware key and then unlock it then everything becomes normal. Similar issues found in my friends Lumia 820.
    Kindly help me. If it is some kind of virus on my phone.. Or some Lumia cyan firmware issue with these phones Lumia 920.. This has become so frequent .. Now it pains.. And want to go back to smooth wp 8 with black firmware. Kindly help me and advise me in this regards. Thanks in advance.
    10-06-2014 05:37 AM
  2. N_LaRUE's Avatar
    First, there is no way to get a virus on WP currently. I'm not saying it isn't possible but as things currently are, there is no viruses on WP.

    So this leads me to believe that you could have an app that causing issues or the firmware that was installed was corrupt when it downloaded.

    If you have a screen protector on this can sometimes cause issues as well as certain types of cases as they can touch the screen making it do funny things.

    To go back to WP8 you would need to flash an older ROM for the phone. My suggestion to you is to the Nokia Software tool again. Be sure that your friend's computer is clean and that when you download and install nothing gets interrupted.
    10-06-2014 05:46 AM
  3. v009's Avatar
    Just to update, before this I was on developer preview for 8.1 and was no issues running really smooth. But after updating from Nokia recovery tool and upgrading to cyan..hving issues.
    10-06-2014 05:53 AM
  4. v009's Avatar
    Also after freshly reinstalling firmware from Nokia recovery to, everything was great for few weeks . Then slowly started unresponsive screen full of glitches.
    10-06-2014 05:57 AM
  5. N_LaRUE's Avatar
    Try a soft reset first if you don't want to hard reset or use the Software Tool.

    Have you put DP back on?
    v009 likes this.
    10-06-2014 06:05 AM
  6. Rakesh Rocky2's Avatar
    I got Lumia 820 and had this issue... It's firm ware issue... A hard reset will m make it faster.. But still it won't be as fast as wp8
    v009 likes this.
    10-06-2014 06:17 AM
  7. v009's Avatar
    Hi
    No I have not gone for dev prev again.

    Could you please guide me with soft reset option.
    10-06-2014 06:30 AM
  8. ArthJar's Avatar
    Soft reset means you just simply press (on/off)+(volume down) buttons together for about fifteen seconds and the device reboots.
    You won't lose any information.
    v009 likes this.
    10-06-2014 06:33 AM
  9. v009's Avatar
    Soft reset doesn't resolve the issue
    10-06-2014 06:57 AM
  10. rockstarzzz's Avatar
    Try to turn off glance screen and also remove the background image on tiles for couple of days and see if that stops. I had something similar with recent DP update and it resolved for me. However, it felt just wrong, so I went back to official Cyan.
    10-06-2014 09:48 AM
  11. v009's Avatar
    This one seems to be working. It seems it's issue with Windows phone 8.1
    I am surprised that very few people noticed or and is Microsoft aware of this issue.
    10-06-2014 01:40 PM
  12. Geddeeee's Avatar
    Never had a problem with 8.1/Cyan on my 920. Runs quick and smooth and no problems whatsoever.
    You will find that it is one of your other installed apps which is causing the problems, it usually is. If you are using Cortana, then that will probably be it. It's not very good at all, even if it is beta. It's a gimmick which cause battery drain and problems. Just my opinion....

    If not. then another app will be the problem (WhatsApp???? FB Messenger????)
    10-06-2014 04:01 PM
  13. colinkiama's Avatar
    Are you sure you a arent downloading or installing anything like an update in the store or files.?
    10-06-2014 04:10 PM
  14. Carlos Alberto De la Fuente's Avatar
    I have the same problem, it happens when I'm playing music; I change the track, lock the phone and when I unlock it again the damn screen will not respond to touch. I have to soft reset the damn thing Weird but it has to be a software problem.
    10-07-2014 12:01 AM
  15. michail71's Avatar
    I notice this happening to my 1520 after updating to the latest glance. It's just a theory but it hasn't happened since I turned off the glance screen.

    Are you guys running Glance and did you update to the new one?
    10-07-2014 09:39 AM
  16. abdullah abu alasal's Avatar
    The same for me
    After few seconds without touching the screen when you come back to touch it wiil be no response
    10-07-2014 04:54 PM
  17. v009's Avatar
    Hi Guys,

    Issue resolved for my L920 after disabling background wallpapers for tiles and disabling glance, but not not sure which one of the was culprit.
    10-11-2014 07:41 AM
  18. michail71's Avatar
    My 1520 has done it since disabling glance but nowhere near as much. Perhaps I'll try the background wallpaper too.

    It must be something in the firmware if both 920s and 1520s are experiencing it.
    10-14-2014 09:43 PM
  19. enomam's Avatar
    I have this issue too - it mainly occurs when I use an app that requires lots of scrolling, mainly tweetium.
    Have just disabled the background image, and will see how it goes.
    11-20-2014 12:46 AM

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