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New Member
Posts: 1
Registered: ‎03-09-2012
My Device: 9790
My Carrier: singtel

9790 touch screen malfunction

Hi, My touch screen is not working correctly. In the middle of a message it keeps jumping to the top of the screen and randomly jumping around and pressing buttons it shouldn't. I have tried restarting the phone a few times and still it persists. I have changed the sensitivity of the touch screen and yet it also continues. Is anyone else have this problem? Is it a hardware issue or a software issue. If hardware I will return the phone under warranty, it is very frustrating.

Retired
Posts: 2,795
Registered: ‎05-10-2010
My Device: BlackBerry Z10 smartphone

Re: 9790 touch screen malfunction

Hi adrianhorsfield,

 

Welcome to the BlackBerry Support Community.

To rule out any software issue, try backing up your data using the BlackBerry® Desktop Software and performing a clean reload of your BlackBerry® Device Software.

For further instructions, see the following KB article. How to perform a clean reload of the BlackBerry Device Software for Windows. www.blackberry.com/btsc/kb11320


Please test to make sure the issue with the touch screen has been resolved before restoring any data from your backup file. If this does not resolve the issue, then it could be hardware related.

 

Thanks.


-FS


 


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New Contributor
Posts: 2
Registered: ‎03-17-2012
My Device: bold 9790
My Carrier: telstra

Re: 9790 touch screen malfunction

Hi,

 

there is some problem in my bb 9790. All of a sudden my touch screen isnt working, then i have to restart it. This is has been happening from the last 1 month. Could you pls suggest what to do ?

 

thanks

 

 

ALI

New Contributor
Posts: 5
Registered: ‎01-16-2011
My Device: Passport SQW 100-1
My Carrier: KPN

Re: 9790 touch screen malfunction

My 9790 has been having the same problem for a number of weeks now. Until today a full reset (battery pull) solved the problem. Sometimes it helped for hours and now and then for some days. Since today it does not help anymore either. Through the desktop software I brought it back to the factory settings. That helped for an hour or so and now the touch screen function stopped again and a battery pull does not bring back touchscreen functionality.

 

 

The software version on the phone is 7.0 bundle 2254 (v7.0.0.528. Platform 9.16.0.57)

 

Suggestions how to solve this problem are very welcome.

New Contributor
Posts: 8
Registered: ‎06-07-2012
My Device: 9790
My Carrier: Mtc Touch

Re: 9790 touch screen malfunction

i have tried that clean reloader and the screen is still not working tried to install another update from alot of carriers and still nothing please any other adivces.......... this is just frustrating......

New Contributor
Posts: 8
Registered: ‎06-07-2012
My Device: 9790
My Carrier: Mtc Touch

Re: 9790 touch screen malfunction

ohh yeah and too add to tht i even changed the screen :/

Highlighted
New Contributor
Posts: 8
Registered: ‎06-07-2012
My Device: 9790
My Carrier: Mtc Touch

Re: 9790 touch screen malfunction

i found a solution ,first of all it seems that all blackberry 9790 have a touch screen problem this is what you do to solve it , watch this video on youtube .. link http://www.youtube.com/watch?v=CxLOfJweDxU watch this to disassemble the board you can see a chord attached to the screen that give the power supple and the abilty to have a touch screen what you do is to push it in a put but not to hard or u'll break somthing .......... thats how i fixed it !! though thats a temporary fix it might happend again :/ 

New Member
Posts: 1
Registered: ‎06-13-2012
My Device: 9790
My Carrier: Vodafone

Re: 9790 touch screen malfunction

Yea had the some problem and had to pull the battery twice to fix it, talked to the Service Provider and they will have a look at it but will take 11 working days, seems to be a common problem with these new phones

New Member
Posts: 1
Registered: ‎08-10-2015
My Device: Curve 9720
My Carrier: 09777943514

Re: 9720 touch screen malfunction

Dear Sir/Madam

I have a BB Curve 9720 Smart phone with OS 7.1 .I am facing a problem related to touch screen i.e left vertical half of my mobile touch screen is not responding but right half is ok.I though it might be a softr problem for which i re-installed OS but no change.Please text me the help.